Never!! I'll keep my wheels turning till they drop off! Our club President is 84, and still rallies with us. He does need a hand to set up occasionally but still tows all over the country.
He did once remark that it is difficult to drive and navigate ( before satnav) since his wife died, and that he needed a lady friend who could map-read."Not for any hanky-panky or anything like that" he said,"just to navigate" One of his equally elderly cronies said " Oh, I don't know, I wouldn't mind getting lost sometimes"
A case I think of the spirit being willing, but the flesh weak!!