It's well known that there are religions aplenty in most places around the world. I can't think of any that don't involve the worship of a god of some kind. Many people choose a religion and follow it (however closely) while others reject the idea of God altogether.
There's one problem with this. Without God, what is morality?
Within the athiest school of thought, this is one massive problem. Can we have morality without a moral lawgiver? Right? Wrong? What defines these?
Food for thought.
Author Notes: I think everyone should consider this question at some point. It's very important.