Last observation....... and maybe this is my real issue with it as man......... but perhaps it's easier for women to do?
Because, they know they're being appreciated. Any man who's getting rimmed by a woman he finds attractive, his eyes are rolling back in his head, no question.
So in comparison, say I'm performing some regular oral-giving on a gal and of course she's like, "oh yeah honey, that's great". Of course I'm thinking to myself, "is it though......... is it really?".
If I was absolutely certain I was really delivering some pleasure and it wasn't a gal just trying to stroke or placate my ego, "oh yeah baby you're the best", I'd probably be a little more open minded about giving a little oral on, what I was unquestionably confident was, a perfectly clean ass.
The risk would be worth the reward basically.
Maybe I'll get there someday.