Biased opinion as I am a Christian, but religion is always present in the lives of those who choose to accept it. My faith has got me through the toughest times, when I didn't have friends to talk to, I had God, when something bad ever happened, I could pray and hope that God would hear me and make things better. I believe there is some sort of God, and even if he can't answer my problems and prayers, it's at least nice and refreshing to know that someone must be there, listening to me, when no one else isn't.
So actually, I think the world is a good place with religion - it teaches us morals, loving others whilst also caring for ourselves, it promotes peace. Yes, there are individuals of all faiths who do wrong, but you can't assume that because of this, religions teach all followers to do wrong as well, because it doesn't. The world is a better place than it would be if we didn't have religion. It's what we choose to do with out faith that makes the world a bad or good place, and the majority of believers use their faith in a good way like God taught us to do.