Atheists, what if upon death, whatever you *believed* was what happened? [Spirituality & Religion]

Eh, if it worked like that, I'd still be an atheist. Not for some terrifically principled or closed-minded reason; it's just that I'm so neurotic that I'd probably convince myself that I'd go to Hell anyway as a Christian, lol. But to answer your second question, Pascal's Wager leaves out the other infinite possible states of affairs, the "Prankster God," for example, who only sends Christians to Hell and everyone else to Heaven. Ironically, being an atheist is just as likely to save your ass from eternal flame as it is to condemn you to it.