Up to now (80), I've usually said 100, because I have always wanted to know what's just around the next corner, even when I get to the ultimate corner. OTOH, now that the country is going to hell and we're at the end of our 230-year experiment in democracy, I care less and less about how long I want to stick around. Also, now that I'm starting to fray a little around the edges, I'm getting less confident about making it to the goal line. I'm more attentive to letting people know now how much they have meant to me, especially the escorts, since I don't see them all that often. Right now I'm working -- again -- on making things easier for the kids to manage the funeral details, to have the references of people to notify, to know how to handle the final bills, and in general, how to get past the mundane part of my post-life.
Leaves them more time to grieve.