As long as you are strong you can Hit. As long as you are alive you can swing. But I may be wrong. I dunno. Or is that right? I guess you gotta be able to stand and wave your arms around. Played 9 with a guy just like that this past summer. Zero pivot , had to help him out of traps and into his cart. He could hit it 200 too. Maybe when you get to that stage your right arm gets more active even for a long time swinger. Its a great game this golf. As is the study of it.
One problem (not big yet , but it could get worse...) is arthritis in the fingers. I didn't have any of that before 60, but the fingers are stiffer now and can hurt a little from time to time. Hope it doesn't get so bad that it will be difficult to take a proper grip and swing the club.... I mean swing the hands holding the club..)