I have no idea. I'd probably want to live as long as I'm able to get up from bed and do all the things I need to survive without any aid. Living in a hospital bed and waiting for death sounds pretty crap.
42 would be ideal I guess. Not too old to function and to too young. Plus if I am successful it would be right after my peak and after I did everything I wanted to do.
And yet I don't see that option in the poll
Delete it.
I have no idea. Ideally for as long as I can maintain at the very least a decent quality of life. Spending your 70s or 80s in a retirement facility or in bed rest at a hospital sounds like ****