You have some reasons for rejecting the snake handling form of Christianity though I don't see your reasoning for accepting atheism. Atheists will tend to say it isn't a belief but I think it is, call it scientific naturalism. It's a belief that started life as a full fledged religious movement in the ancient world, which I think is a point worth bearing in mind.
http://www.religionfacts.com/a-z-religio...eanism.htm
http://www.religionfacts.com/a-z-religio...eanism.htm