I see nothing bad about it as long as you don't do it to expose yourself. In other words, don't wear short shorts like that. I think exposing yourself like that is immature. But in other clothing combos I see it as totally fine.
I think it's kind of hot if she doesn't but don't really care if a girl wears underwear or not. If you're more comfortable without it then don't wear any underwear, unless you're wearing a skirt or something pervs can look up
No! That's sexy! If I go commando I stay in the house. In public it could be hazardous because let's say you're wearing a skirt and you're standing under a sewer hole or a street vent and something splats on you or mist hits you. That bacteria gets in the vagina and cause baterical infections. So be mindful when you're bare and out in the fresh air. Vaginas are highly sensitive.