Ants, insects in general, are a serious pain in the ass. I've been fortunate that, in the 7 years I've owned my home, ants haven't significantly invaded my living space. They've gotten into the attic but got dealt with; hopefully there aren't more lurking around but there probably are.
Roaches and ants... pretty much you can't live in Florida without having to deal with those fuckers from time to time. Before I replaced my dishwasher, I had a mild roach infestation there at one point. They crawled into the front door, where all of the controls are.
That was a hassle. Open the dishwasher in time to see a tiny roach dart back inside the machine. I had to take the damn thing apart to clean it out. But now I have a nice new dishwasher, and I haven't seen any signs of an infestation in several years.
I thought about eating it after that but I was too grossed out.
I can't believe that you would consider eating something after bajillions ants were crawling on it. As long as I'm living a normal First World life, that thought wouldn't enter my mind at all.