Totally agree with that. My FIL is in this boat. Retired 12 years ago and basically for 12 years has woken up, got dressed, had breakfast, walked to the shop, read the paper, had lunch, watched the news at 1pm, watched a load of programmes like Escape to the Country, gone for a 30 min walk, had tea, watched the news again at 6, bit of TV, watch the 10pm news, bed x 364 days a year for 12 years. he deviates from that routine once a week when he goes shopping with the MIL as she can’t drive and maybe once a month when they visit someone. He looked a young 60 when he retired. He now looks 80.
That doesn’t appeal to me.