After death, do you want to exist somewhere, or not ?
Non-existence would be okay with me. I wouldn't even be aware of it.
I guess ideally it would be nice if there was some sort of afterlife, because there are a lot of people (and other animals) that die young, or die unhappily, or otherwise get a really bad hand in life, and I would like it if they could find some happiness for a while somewhere rather than ceasing to exist after such events. Otherwise they just live in a sad state of affairs and then die, which is kind of pointless.
Descriptions of afterlives that I've heard don't sound very appealing to me. The idea of heaven as a physical place, or the idea of turning into pure consciousness, or the idea of rejoining the Great Cosmic Spirit, are generally vaguely described.