My father-in-law is pushing 70 and still coding. He just semi-retired, but up until last year he was employed, despite having little in the way of social skills and living in a remote area, far from any coding hub. If he was just a bit more personable and willing to move within a couple hours drive of Boston he could have fielded multiple offers. Pure anecdote, but if you're decent, have a little hustle, and don't mind working in a soulless office park, it seems like you'll never struggle to find a gig.