Hmm... Actually, I think that it's more of the people with the religion. I mean, seriously, religion is something that was made for people to be contented with their lives! I wouldn't think that human race can ever remove religion off the lives of many people. There are people that believe, there are people that don't. The problem is with the people that really DO have religion. Sometimes, they just take it too seriously.
They believe in a certain god and do not wish that the other religion, besides theirs, should exist, just because they believe in different things. Though there are the wise ones who knows that it's okay to believe in anything you wish, there are also the "dumb" ones who condemn other people just for what they believe.
So, to put it simply, there's a small possibility that this world of different religions can actually get along.