Do you look like an Olympian?
Your kids are probably grown, so that helps.
However, for most men, they don’t have the time to work out sufficiently to be in tip-top shape. After working 8-10 hours, 45 minute commute, household chores, tending to the kids etc, the time frame is very narrow to get a serious workout in.
I’m training for international level Masters Track & Field competition.
I’ve played sports, continually, since 5 and training since 13.
It becomes a part of you after time.
No kids.
I should add that I understand your point.
Luckily I’m naturally Adonis like.