Hell is other people - Jean-Paul Sartre

I dont believe in a literal heaven and hell, I think they're more devices and emotional crutches for people. ie, I was raised as a Christain, Go to Church or you'll go to Hell, was the message given to me as a child. Or if someone has a bad life they'd like to believe there's something better waiting for them.
Personally, reincarnation is more likely I think, but there would be no memory of past lifes. A cycle seems more logical than a definititive stop.