Crotchless Panties, Hair-Nourishing Shampoo, & A-Cup Underwire Bras

I don't really understand any of these, I mean, what's the point?! They don't make any sense. It's a lot like men isn't it? They all do things that are COMPLETELY pointless, not even just pointless, completely...what DO they do? I mean "nourishing" shampoo? Hair is DEAD. Last time I checked even if one WANTED to feed dead things, they just don't swallow...or you know...metabolize...because it is actually technically possible to force something down someone's throat... I read a thing once that went "Mean people suck; nice people swallow; stupid people choke; and weird people gargle." I was in middle school at the time and wondered if it was even possible to gargle one's own saliva. But that's not the main point, which is crotchless undergarments.

Why exactly would one wear crotchless underwear? Isn't the entire point of underwear to put a barrier between one's privates and outerwear? This is done to prevent such unpleasant incidents as chaffing...or bacterial infections...or pictures of one's vagina circulating on the Internet. Well, maybe some people like their privates well ventilated, but couldn't a person get all the effects of crotchless panties by simply not wearing any at all? In my experience, crotchless undergarments seem to be rather more expensive than their...crotchful counterparts, so why should or more to the point why would one pay that sum of money for a scrap of fabric that essentially serves no purpose and isn't even that well-made, I mean, to my knowledge, crotchless panties aren't charmeuse and bias cut. Well, I suppose one could feasibly do so out of bias tape, but why would the effort be taken? But why would the effort be taken to purchase and wear such things? I guess anything is possible.

In conclusion, I fail to see the purpose of crotchless underwear and do not understand the reason for their existence. If you can help me discover the answer to this perplexing problem, please, do enlighten me. The only thing I can think of is so that the next time an untalented, shameless, ill-mannered, vacuous, and vulgar excuse for a celebrity exposes herself (or himself in the interest of gender equality but I don't believe I've ever heard of crotchless underwear for men), the excuse is available that it wasn't her (or his) fault because undergarments were worn.

P.S. I do realize, albeit a bit belatedly that I have compared men to crotchless panties...and rather unfavourably at that.