There was this book I read awhile back that had an inte;resting theory.

That the afterlife is the same as Earth, except you age backwards, and then once you are a baby again you are reborn on Earth and repeat.

Or, another one I've heard, the "light" you see is actually you exiting your new mothers womb and you just start over like that.

I like the first one I said personally. It's like living two lives, and you'll age backwards so you can do the things you didn't get to do the first time around.

Inside of each living thing there is this immortal miniature of itself. When the big one dies, the miniature goes off in search of a new body in which to live. In this way there can be no new life without death.

Dinesh D'Souza makes a few scientific attempts at explaining the afterlife. For instance, he regularly claims that because dark matter is undetectable, it is possible that the spirit/soul of a person is re-incarnated in dark matter form.

This one's from Papua New Guinea, if I'm not mistaken:

There is this cacodaemoniacal figure who lives below a cliff. At the edge of the cliff there are trees, to which cling the spirits of those not honorably slain in battle. Once the weight of the spirits becomes too great, the tree falls, and this demon catches most of them in her net. She then brews them, and uses their skulls as drinking cups, to feed her family.

I've heard that when you die, you win every Create Debate argument and you start out with more points than JC ;)

I've heard that in the after life, like in real life, there's an after birth ;)

I beleive Llfe and death, or existence and non-existence are not independent, drawing any distinction between seems like a fallacy to me.