@overlordarhas: I assume you are referring to the Catholic Church maybe? Or are you speaking for all religions?
If you are referring to Christianity, there are many different types of Christian denominations. Some believe it's already determined who's gettin into heaven, some believe good deeds get one into heaven.
It really depends on what denomination or religion you're looking at to determine what happens after one dies. Some religions are all about reincarnation and about bettering one's self in the next life. The Heaven or Hell thing isn't too cut or dry.
I don't believe people of a religion personally see the rest of the world as damned. But, yes the religions themselves certainly give off that vibe.
Religions put up barriers just like ethnicity, social status and many other things do.
I'm not denying that religion does this. Just that other things contribute to a segregated world.