> Ask HN: any hackers over 60? 70?

I'm 68, and I should add that "hacker" meant something different when I first heard it used. :)

> Are you still employed or retired?

I'm retired, but I still program for enjoyment. I have a line of free Android apps published:

https://play.google.com/store/search?q=lutus&c=apps

> How does one's passion and aptitude for hacking evolve towards this part of one's life?

If anything, programming has become more important to me as I have gotten older, for the same reason that mathematics has greater appeal to a maturing mind -- it represents a rational counterpoint to a world that, over time, seems to make less sense.