When I was in HS (graduated in 1999), I had never seen any AF, AE, BR, etc. clothing. I went to a pretty well off HS, but the there were no AF stores in the city. So when I graduated I ended up at a university where the average family income was about $150k-$200k and EVERYONE was wearing Abercrombie & Fitch shirts. It was everywhere. I, being from a city that didn't even have an AF store at the time, had no idea what these people were wearing. A couple of other people from my city also went to the same school - one of them even guessed that AF was some sort of mail order catalog clothing. It was a strange experience. 🙂
But anyways, there's nothing wrong with buying stuff from these stores. If someone wants to buy $60 jeans (which really isn't much IMO), then that's no big deal. Personally, I wouldn't want to wear pleated pants with old sneakers and a nasty torn up video game shirt. Wear whatever you want. I don't like wearing AF or AE stuff, but I like some of the stuff from Structure, BR, etc.