I see it all of the time, and I’m going to be frank. Hair tied into a bun is the opposite of sexy. It is unattractive, especially as a topknot. Maybe a bun on the back of the head, librarian style, might pass muster, but probably not.
Man buns are even worse. Any dude who sports a man bun deserves a quick kick in the gonads courtesy of an NFL placekicker.
You can argue in the comments, but you would be wrong.