no, simply based on how far you'd go for quality and how much money you're willing to spend just heightens your bracket.
speakers of over $1000 (yes i'm saying just the speakers no amps, just those bookshelf speakers that doesn't even have their own pair of cables) wouldn't be cost effective once you weight everything else, you balance your whole build and lay out your priorities.
convenience is an acceptable reason, but how far would you favor it is one of the reasons why some doesn't even look at SSDs as an entirety.
from which point did you get that SSDs are leagues more reliable than HDDs? even if you aren't implying it as such an exaggeration, how do you even compare it?
though as a note to that, i haven't seen a 1TB SSD with 5years of warranty, some blacks and red pro has a 5year warranty at least.
you aren't even explaining yourself, how am i suppose to wild-guess your perspective?
that would actually be a good start, those stuffs i went through are just a part of builds that would make things more interesting.
ohh and i heard RAID5 with a good raid controller could sustain up to 300MB/s on a bunch of 7200RPM HDDs, its pretty cool.
now onto your last paragraph, i'd rather layout my priorities.
1) processor - aside from sheer core performance, sheer core count can, and does affect minimum framerate, i went through that with Honemi once.
which means a haswell-E 8core might actually be worth it for a gamer.
2) low latency, reasonably high speed, high capacity ram - 4x8GB is plenty or even too much, finding one with a CL9 1886Mhz would be hard though and expensive.
CL11 2400Mhz is much more common, and 4x4GB or 2x8GB would be ok too, you need at least 4dimms to go with LGA2011 boards for maximum potential.
3) motherboard - at least get the one with the features you want.
some boards gets quite expensive but some are cost effective so its a give or take, $250 is the sweet spot for most high-end boards.
4) HSF - nothing beats a good HSF.
cant do much with a shitty HSF now do we?
5) GPU - it mainly depends on what end-goal are you after, 27" 2560x1600 @ 120Hz would surely need two TitanBE just to keep it constant, where as a normal 1920x1080 would only need a single 780Ti.
6) monitor - you'd spend years staring at it, why not get something that wouldn't rot your eyes?
some gamers swear on 120Hz screens, though a good 60Hz IPS still does plenty, 2560x1440 or 2560x1600 is still by far the best investment you could go with a monitor.
7) PSU - stick with a crappy PSU and down goes the system.
get ones that are known to be highly reliable, you could get one with higher efficiencies too but its not necessary.
8.) boot drive - SSDs is the best for this role, but the size? you don't necessarily need a 512GB or larger SSD for a drive solely for booting.
having a separate and dedicated SSD for booting still the best way of doing it, I/O queue would get flooded if theres a bunch of apps coming from it.
see reviews that random access still plummets down under 100MB/s when I/O is flooded.
9) HDD for archive - high capacity, decently reliable, cost efficient, what could go wrong?
while having a fast drive for archive has it's benefits, it doesn't kill you to wait an extra few minutes when transferring files.
10) case - good looking, very durable, hopefully affordable, and great design cases are one of the hit-or-miss investments.
its not quite a low or high priority purchase since its that type of thing that'll last you the entire lifespan of your rig, could even be reused for a newer rig.
11) case fans - if your case hadn't come with reasonably good fans then you're quite in it for some purchases.
quality fans like those from noctua could do you good, keeps temps low and most notably some stay so silent that you'd sometimes forget your PC was left on.
12) application drive - SSDs? HDDs? which to choose? but i'm pretty sure i'd need at least 1TB for it.
while an SSD would be preferable, when your game library is approaching 1TB it becomes problematic, high capacity SSDs costs a fortune.
on the other hand HDDs are slow and power hungry, though cheap, a small SSD cache could perk it up quite noticeably.
13.1) headphone - a good headphone for those times where you don't want a full blast from your speakers.
often times its better to use headphones during gaming, although a good setup of speakers could provide better immersion.
13.2) speakers - ahh speakers, rumble that table and get that sound going.
a good pair of speakers, or 5, does wonders with gaming and even movie immersion, you feel it, you crave for it, and you hear it clearly.
13.3) soundcard - good sound, of the other parts of the entire sound system a good soundcard can add a bunch of pleasing effects that none of the speakers or headphones can do.
some features are even exclusive to one type or one brand of sound cards.
though purely by sound quality, with the recent new onboard sound chips its less necessary to upgrade at once, hearing the onboard first would be the convincing factor.
14) mouse - a good accurate mouse is king, you'd die out when you mouse jitters, i mean literally die.
good mice would give you better control of things.
15) keyboard - good old keyboard with that ticky sounds, mostly depends on preferences but certain features does make a difference.
NKRO for one would allow you to smash your face on the keyboard and it'd register all the keys pressed, then theres the mechanical for durability and accuracy.
Edit: I also wish to note something: Unlike GPU/CPU/RAM/ETC... components like speakers do not drop in perceived value over time. The sound is always going to be just as good as when you got them, and everything will always sound just as good through them. Compare this to eyecandy and processing power.
true for the most of it, but theres one thing to take note, those speakers do deteriorate albeit slow, even the soundcards wears down over time.
and so does their resell value, certain new models makes the old ones seem undesirable for one, although the rate of this isn't as fast as processors or GPUs.
just look at how you managed to get your $1200 headphone for $600, i find that oddly sweet myself.
in any case i think i've got the idea of your perspective, you view these things as those 1time purchases that'll last you decades before you even think of upgrading them again.
though indeed investing in such, once you see their long-term worth, makes for a valid reason.
but it still depends on how much you could shell out, even if the priority means it's at the bottom of your list doesn't mean you wouldn't spend a lot on it.
it just means you'd put it off until you've bought everything else.
PS: a good tactic for speakers is buying a reasonably good $200 speakers as an initial investment, later on once you've got everything else you can shell out as much as you want for a better front speaker, now move the old $200 speaker to rear channel.
note: this perspective wouldn't apply to SSDs, they deteriorate really fast, well 1PB write isn't quite easy to wear down, it still wouldn't last you a couple of years if you use it as an all-purpose drive.
this is also the reason why a lot of people doesn't want to buy refurb or 2nd-hand SSDs, NAND wear level is unknown and manufacturer could just reset SMART making it seem new(resold as refurb).
and its also why splitting loads across multiple SSDs would prolong each SSD's write-wear life and would save you from catastrophic failure taking all the files at once.
