Am I prone to infections or a UTI if I don’t wear underwear during my runs?

I’ve heard people state that running without underwear is gross, which I never fully understood, since you wash your tights or shorts after runs just like you would underwear. I personally never wear underwear when running, and even in ultras where you’re in your clothes for much longer I’ve never had an issue with UTIs or other problems. Whether you’re wearing underwear or not you want to change out of sweaty running clothes as soon as possible to prevent issues. If you’re not able to get showered right afterwards, or again if you’re in a long event, it helps to use wipes to keep everything as clean as possible. Also, you want to make sure whatever you’re wearing fits properly and doesn’t rub or chafe sensitive areas. I find, personally, that it’s easier to do this without underwear as it’s one less layer to twist around and get out of place.