the bottomline is there are 4 possibilities/realities:
- there is a God and you don't believe in him - fail, non-believers are doomed
- there is no God and you don't believe in him - meh.., the ideal scenario for atheists
- there is a God and you believe in him - ok, safe side..
- there is no God and you believe in him - still ok, at least you tried to have faith
I'd rather choose the 3rd or 4th reality/possibility, it's just the safest option in my opinion..