i don't think they are generally bad. i'm talking the neighborhood in which i live & further out. that's how jewish people are around here & everyone knows it. please just take it as the truth because that's what it is. i don't hate them. everyone has people they don't like. so, really, forget that they are Jewish & just think of them as "people".
I think what you've come across are the very religious Jews. They usually like to live near each other so that you'll have whole neighborhoods where that's all you'll see. They're often affluent too so their neighborhoods are pretty nice. They're not fun to be around. They will shun you, avoid having to interact with you as much as possible. *Shrug* That's just the way they are. They do that to protect their culture and beliefs so don't get too mad at them. It's not personal, really.
I grew up in NYC and there are more kinds of Jews there, thank God. The ones that I'm friends with are either not practicing Jews or Jewish Christians. They're both smart and funny. Both very fun to be with. And they WANT to hang out and interact with you!
I really hope that you'll get to meet these kinds of Jews someday. They really are fun and interesting.