Maybe gaining a level at higher levels should give more than one AP? That way there'd be a better reason to not instantly hit rebirth when you get to age 20.
I really love the game, I'm going to keep running it for a loooooooong time. I love the Autosave every 30 seconds, wonderful feature for a game like this.
Just one suggestion, more of a request/question, really:
Is there anyway to make the mouse-over stuff auto-update so you don't have to move the mouse off and back onto things like Age (for the timer) Health, MP, or Experience? That would make it slightly more convenient if it was possible.