See and I'm perfectly comfortable in my underwear. If I wasn't, I wouldn't wear it! My panties don't ride up...those that do get thrown out. I often wear thongs (for the no VPL thing) and I don't feel them at all. Bras? Like a second skin. I will admit to having the occasional bad bra or two (or a good bra gone bad as I've gained or lost weight) and those come off immediately. Hoenstly, if your underwear is uncomfortable, you aren't wearing the right underwear. You shouldn't feel it at all!

I'm also not modest in locker rooms. I figure no one wants to have my white butt in their face so I don't flaunt it, but I'm certainly not going to hide in the bathroom to change or anything.

I go commando with bike shorts but I wear underwear in other athletic bottoms (like running tights). I have a good reason to, and it's not modesty. I was thankful that bike shorts didn't pose the same issue.