I don't believe in a heaven or hell, but I do think that consciousness has its own *life* (for lack of a better word), and that it may be eternal. I have seen a person who died. I saw only his hair and his legs at first - his lap, actually - as he squatted down beside me. It was a curious and rather chilling sight. Then I saw his arms as he embraced me. I couldn't feel his arms, but saw them, and I felt comforted. I sensed very strongly that it was my brother-in-law, who had died of a drug overdose about 3 months earlier. He no sooner embraced me then I fell asleep. Had I fallen asleep already, and dreamed this? It's possible, but I don't think so. I remember being awake, because I was crying. And I didn't grieve his death. We were friendly, but not close.
I can't say I have a strong opinion on the matter, but, especially after that incident, I remain open-minded regarding afterlife.