How I became an Athiest, and why I had to?

You did NOT have to become an atheist. That is so stupid. You may chose to believe what others believe, but Christians believe what GOD tells them to believe. What are you talking about? Sit on a cloud and watch the earth die? That is not the reward for being a Christian. Even if it was, it sure is a heck of a lot better than burning in hell. You really need to educate yourself more on other religions. If your an atheist, you should know more than anyone about other religions. If you're just rejecting them and don't know all there is to know about them, you are extremely stupid. It is no excuse to reject God out ignorance; He will not make a special exception to let you into heaven.