What's your kamikaze age?
This is just a further thought beyond the philosophy of "dying with zero" (a movement and book about spending all your money while you're still alive instead of giving to heirs).
If you do all your maths and estimates, at what age will you absolutely run out such that you should just essentially kill yourself? Not that you would. It's just an age number to compare against your expected lifespan, both of which are completely unknown anyway.
It boils down every "it depends" to one number: your kamikaze age.