If you're going to go to a different country and expect everyone to act the same as where you're from, you're probably in for a surprise - no matter where you're from and where you're going.

It's worth mentioning that the term is asocial, not antisocial. Being asocial is being standoff-ish, being antisocial is something completely different and usually associated with psychopathy.

That being said, I think that to a large degree, you'll find that we're basically reasonably good guys. I think the response you're getting to this criticism of yours has a lot to do with the way you're phrasing it, ie whinily and strongly suggesting that we're all egomaniacal douchebags that need to be "fixed". How friendly is that, then? How much of an effort are you putting forth?