It's *definitely* a way for people to arrange their hair I guess. Honestly not a big fan of it in ~reality~ but it can compliment fictional characters quite well aesthetically. Some of my favorite characters have twintails.
Maybe. Thinking about the anime I do hate, while several of them are dumb harems, my problem with most of them is the dumb part more than the harem part. It's just harems have an annoying tendency to be dumb.
Based on your posts wherein you bring up things in anime you hate, would your personal Hell be an eternally growing anime harem where you are always and only refered to as "Onii-chan" to the point it becomes a cute nightmare chorus?
Oh who are we to judge? There's a kids show on now where a vampire and an ancient entity made entirely of gum used to be in a romatic relationship. Actually, that kind of makes more sense then lesbian bears eating lesbian love juice before a lesbian bear council and BY GOSEI'S USELESS DOLING OUT OF NEW POWERS SHOULD I NOT BE ABLE TO SAY ANYTHING IN THAT SENTENCE AND HAVE IT ACTUALLY EXIST!