I'll cast the vote/opinion in favor of underwear.
When I sit down, I actually do feel my gut on top of my thighs, and it's slightly less comfortable if I don't have the underwear that's in between.
Chub rub is also quite real, and certain types of underwear definitely help with that. Also of course, the possible risk of various bodily fluids being more likely to soak into the regular clothes if there is no underwear, despite one's best efforts. That's probably at least 99%+ of the reason behind underwear in the first place.
It's certainly nice to sometimes sleep without wearing underwear, however.
When I sit down, I actually do feel my gut on top of my thighs, and it's slightly less comfortable if I don't have the underwear that's in between.
Chub rub is also quite real, and certain types of underwear definitely help with that. Also of course, the possible risk of various bodily fluids being more likely to soak into the regular clothes if there is no underwear, despite one's best efforts. That's probably at least 99%+ of the reason behind underwear in the first place.
It's certainly nice to sometimes sleep without wearing underwear, however.
2 weeks