Because you'll never end up anywhere in life expecting people to cater to your needs.

[ Like, isn't that obvious, though. Just because your friends decide to jump up off a bridge doesn't mean you automatically follow in their stead out of a desire for conformity ... right ... ]

There's no point in wishful thinking. From my experience, having people you know from home here isn't in your best interests. They could be used as leverage against you if — and when — things go south.