No sense in speculating whether he wanted to retire or not... we don't know.
My father retired from his job but after a couple of years was bored so he did go back to work part time at two different jobs (one was the same as he had done before for 30 some years). Wasn't until they decided to move that both of them retired full time. They're still quite active in keeping themselves busy. They're living comfortably (not gonna discuss income :P). So it depends. I had a great-aunt who I THINK retired for a short time then went back to work until she was somewhere in her 80s...though I'm fuzzy on if she did eventually retire for good before her death.
Sad to see his passing though I hadn't seen much of Safer in the last few years.