Heaven and Hell, while reassuringly easy answers, are not particularly appealing to those who place a great emphasis in rationalization. Honestly, to what benefit to creation is having us laze around on clouds or to torment us, forever, based on what was ultimately a matter of how well we managed to cope in life from what we were given? Ludicrous. Perhaps even insulting: you give creation too little credit.
I prefer a deeper answer. Unfortunately, the fundamentals of death are tricky business considering we know very little about the fundamentals of life, in an Allegory of the Cave [http://en.wikipedia.org/wiki/Allegory_of_the_Cave] sort of way.
Perhaps the most attractive way I've heard it described came from a Zen master in Zen Mind, Beginner's Mind [http://la.gg/upl/Shunryu_Suzuki_-_Zen_mind,_beginner_s_mind.pdf].
I went to Yosemite National Park, and I saw some huge waterfalls. The highest one there is 1,340 feet high, and from it the water comes down like a curtain thrown from the top of the mountain. It does not seem to come down swiftly, as you might expect; it seems to come down very slowly because of the distance. And the water does not come down as one stream, but is separated into many tiny streams. From a distance it looks like a curtain. And I thought it must be a very difficult experience for each drop of water to come down from the top of such a high mountain. It takes time, you know, a long time, for the water finally to reach the bottom of the waterfall. And it seems to me that our human life may be like this. We have many difficult experiences in our life. But at the same time, I thought, the water was not originally separated, but was one whole river. Only when it is separated does it have some difficulty in falling. It is as if the water does not have any feeling when it is one whole river. Only when separated into many drops can it begin to have or to express some feeling.
In other words, when we die, the elements that made up our individuality is simply reabsorbed into the universe. Contrary to the demands of our ego, there's very little in ourselves worth preserving, from a cosmic sense. If it's exhalation of your individuality you seek, you'd best seek it in life.
I do suspect there will eventually come a time that humankind evolves past death. With adequate medical technology, we'll simply run out of things to ail us. The ravages of age itself may prove reversible. Our descendants would look back on death in the same way we do smallpox incredulously asking, "can you believe that used to happen? How backwards our ancestors were." I'm a little resentful I wasn't born in that age.