Not going to have the downvotes driving my profile into oblivion. I think retirement sounds fantastic and it would be great to live to old age enjoying personal programming projects. THX.
Wonder if you might be saying the same thing when you're 65. Meaningfulness can come from places besides jobs, house plants, or Facebook I think. I could also be totally wrong, but I think it's worth attempting to find out.
If I were you I would pick a near impossible project and work on that. As long as your mind is healthy you can always work, even if just on your own.
Social inclusion is an essential part of life and it's completely closed off from people who are "old" in programming. I don't think I am the only person to note that.
Why are you looking for social inclusion at work, of all places?