Don,
I'm in the same boat as you but I'll only be 65 in three months. There is NO WAY I'd go back to work, 43 years on the same job was tooooooooo much for me, I'd rather pick aluminum cans along the side of the road before I'd go back to work. Maybe put the wife to work but no me.
I used to get migraines three time a month and they would last three days. When I retired........... the migraines left.