There is a massive amount of evidence:
1. Cosmological evidence
2. The fine-tuning of the universe
3. Ontological evidence
4. Moral evidence
5. Historical evidence
All of these are expounded over the centuries again and again, even before atheism really began to exist. Atheism didn't really come into existence until the Enlightenment, and it's a relatively new philosophy. If you would like to get the gist of these, you can look them up on the web and get plenty of info plus perhaps some rebuttals and counter rebuttals. I'm not putting those arguments up there to somehow convince you. However, I do expect that you should begin to treat theists in civil way, rather than just insulting people because you think they are right. As far as atheism goes, there's really not any strong arguments for it, and the only evidence that it might be right is some half-baked theories that the universe popped into existence from non-being.