I believe in two things ultimately. 1. I shall die. and 2. I shall pay the government a lot of money before and after I do so.
As far as god and satan. Well...I've been called satan once, so...do I believe in me? ::falls over laughing::
I'm gonna go with...does it matter? Religion is social control. It is about power. It is for uniting peoples whom would otherwise not really flock together.
Religion is regarded by the common people as true, by the wise as false, and by the rulers as useful. ~Seneca the Younger
"I refuse to prove that I exist" says God, "for proof denies faith, and without faith, I am nothing." "Oh," says man, "but the Babel Fish is a dead give-away, isn't it? It proves You exist, and so therefore You don't. Q.E.D." "Oh, I hadn't thought of that," says God, who promptly vanishes in a puff of logic. ~Douglas Adams, Hitchhiker's Guide to the Galaxy