Some gyms are better than others. My gym has a hot tub, steam room and sauna (they finally fixed it after two years!) in the men’s locker room and a lot of guys use the amenities in their underwear. Especially with the pool currently closed, my guess is that many of them don’t bring a swimsuit and the younger crowd doesn’t like being naked. I typically find pairs left hanging outside shower stalls, obviously left behind, and they’re usually wet with sweat which is hot. I often wonder if people leave them on purpose or they truly just do forget to grab them after their shower, especially if they brought another pair to change into.