Mid 50s here - so like all the OP before - manscaping just was never a thing earlier in my life. Not particularly hirsute in the first place, but it never occurred that I could manage that hair.
However - I got into waxing my shaft, balls and crack about 15 years ago. I get a lot more tongue action these days

And the feeling of no hair, and no itchy regrowth is fantastic. I trim the bush mildly once or twice a year.
Having no hair around my shaft is super comfortable and perfect for penetration. Similarly, a smooth hole is much more comfortable for the top if I’m in the bending over kinda mood!
If I’m with a guy, I really like body hair though. Backs, chests, legs and bum are such a turn on for me - but he’ll get a lot more lovin if his balls are smooth!
I do it for me, not anyone else - and not because it I think it looks better - because I feel more confident and better about myself for being smooth where it counts.