Why do you gals wear thong underwear ?
Does it feel good ? I would think it feels like a wedgie.
Don’t you ever worry about anal leakage or a premature menses?
I would think that your underwear would get stained fairly quickly.
Or do you do it simply for your boyfriends/husbands.
Originally the purpose was to get rid of panty lines, IIRC. I’ve never worn them so I can’t answer your other questions.
I wear it because I like how it looks both without other clothing on, and under clothes (no pantyline). I find thongs perfectly comfortable - they’re made to fit there, so it’s not at all that uncomfortable feeling of having fullback underwear work its way into the same spot. And, well, no, I don’t worry about anal leakage or an early period. Why would I? If I were to suffer either of those problems, why wouldn’t underwear with a full bum get stained just the same?
I don’t wear thongs but if you’re worried about anal leakage, I think you have bigger problems than that!
No, it’s not uncomfortable. I am also confused by the anal leakage/early menstruation questions. Just how high do you think a thong goes??
How would I know. It out of sight.
Because it feels good (almost as good as going commando) and there’s no panty lines.
Have never experienced any of the various “leakage” and “staining” issues you are concerned about so I can’t address that. These things will happen no matter what type of undies, so I don’t get the concern.
so why not just go commando ?
Because it’s not always, ummm, practical in a short skirt or dress. 
Why not just find it acceptable for women to be fine with wearing thong underwear for reasons you might have misunderstandings about? Luckily for us, we have many options of underwear to choose from, so it doesn’t have to be a grannypanty/commando dichotomy.
Although thongs remove panty lines but sometimes extend above jeans, the slight titillation this provides is intentional. Yes? No?
FWIW, I don’t find thongs that sexy. I guess it’s because my tastes became set back in the era when sexy underwear meant bikini panties, preferably skimpy and diaphanous. 
No need to get your panties all in a twist.
I enjoyed the photo of the Dutchess on the tarmac at the Calgary airport.
They sure feel like I’m giving myself a wedgie whenever I’ve tried to wear them. The only reason I considered wearing a thong was to get rid of panty lines.
Because people with um, ample derrieres would rather purchase a wee wisp of fabric than the full sail that would be required for complete booty coverage.
Depends on how your ass is shaped and how the thong is cut and how active you are. If you wear underwear of any type that isn’t cut the way your ass is shaped, it’s going to be uncomfortable, more so if you’re up moving around than if you’re sitting around because there’s more chance for things to slip and slide around.
Personally, I’ve never seen that they reduce panty lines. If your pants and tight/thin enough to have lines from seated panties, they’re going to have lines from your thong. The lines are just going to be above your cheeks instead of under them.
They seem kind of unsanitary to me. But what do I know?
Speak for yourself, I detest butt floss.
I don’t often wear them because I think they are ugly, but it is the only style of underwear that fits my body properly. I am a very small woman with rather small hips, legs close together (so no width to the crotch) and a proportionately ample and soft butt. Underpants that don’t give me bad pantyline on the cheeks are too big and baggy in the waistband, crotch, and leg holes (which can create rumpled fabric that also shows through thinner/softer fabrics - there’s no way to win with my ass). Thongs give me no pantyline at all. Where they might dig in a bit up top, all my clothes are loose anyway.
Thongs are comfy, I feel them less than most styles of underwear (which as I said are always too big or too small for me somewhere in their construction).
Thongs do not touch my anus. My butt crack is deep (common in bigger butts) and the back strap sits on the top of it. To get it all the way inside I’d have to deliberately wedgie myself and yank the waistband of the thong up to my waist.
I keep my anus very clean (carry flushable wipes in my purse) and chart my cycle so I am rarely surprised by blood. Neither of these issues are thong-specific BTW.
I don’t like going commando because my vagina leaks not-insubstantial amounts of cervical mucus most of the month (which underwear contains sufficiently) and I like to wear pants, jeans and skirts at least 2-3 times before washing. Also going commando in skirts is just unacceptable.
IMO a properly-sized thong will not ‘slide around’, ‘floss’ or move bacteria from the anus to vulva. I don’t even understand what people are thinking of when they mention this. Maybe if you have a flat butt, there’s nothing to hold it in place and it slides? I wouldn’t know.
My boyfriend hates the way thongs look and that is a part of why I don’t wear them.
If my underwear ever happen to show, it’s not because I want to titillate anyone. I spend rather a lot of time and effort trying to make them unremarkable in every way.
Ooh,big word!