24 and I'm 100% serious. I do have misgivings about it though, mainly: what if I return and experience an even more painful life than this one? Seriously - I'm really convinced that returning to some kind of reality, whether this one or another, is inevitable. I think that it's very likely that there's conscious life elsewhere, maybe even other universes with different laws, even though we can't observe any right now. If we assume that earth is the only haven for life, there's still a lot that concerns me:
I really don't want to go "back to square one" as it were and have to be a child again, I hated being a kid. I really don't want to return as an impoverished soul in the third world, or a severely disabled person in a world full of mostly physically normal people. I really don't want to return as a factory farmed pig living in its own feces with no room in my cage to even turn around, or a wild animal for that matter, whose life isn't much better - having to worry about being eaten alive, parasitic diseases, and god knows what other torments. I really don't want to return as a violence-prone individual who spends their life in a cell, or conversely, a victim of that violence.
I've only listed a few of the horrors known to us on this one particular planet, who knows what goes unseen. And yet, I have to roll those dice sooner or later, so all of this worrying is almost pointless, nonetheless it's still terrifying to consider, and gives me great pause. I have hated this life, but maybe it's still better than playing that roulette early.