Nothing to obsess about.Sure,most animes have a age close to that,but what's wrong?I mean,yes,Naruto is quite annoying,but other characters are quite realistic,with a more adult mind,like Lelouch.
It's not about the content as much as the quality.
@DarkJedi(Watching Blue Gender and Code Geass made me grow from "I sooo hate mecha" to "Acceptable,but if it's not a good stor,not worth the time".