No idea, but I'm leaning towards reincarnation. But I don't really think about it too much; I prefer to enjoy every day that I'm alive as much as I can, because I'm only here for a tiny little space of time--today I'm alive, tomorrow I might not be, so I want to enjoy every day as much as I can.
Every day coming home, I pass the city police station, and there's a sign outside of it saying how many car accidents there were in the city and prefecture that day, how many injuries, and how many deaths. I literally see it every day, and any day I see a death, I say a little prayer--not for the dead person, but for their family, the people that loved that person, that they won't hurt so much. Once you're dead, you've moved on somehow and know the answer to what happens one way or the other, but it's the people left behind who are grieving.
That sign's a little reminder that in the midst of life, we are in death, today, someone has died, and their family is grieving--and tomorrow that someone might be me and the people grieving mine. You never know. And since my time is short and one day I can never know in advance I'll be gone, well, better to enjoy each day like it might be my last.
Why worry about what will happen after I die, when it's a given that one day I'll find out for sure?