I think Kirk had man-boobs in TOS. It put me right off when he didn't have his shirt on. I'm amazed that people like him shirtless.
Still while I don't fancy him myself I can admit he has more adult charisma than anyone else in Star Trek.
You consider that
Maybe not manboobs but something's wrong.
Maybe the lack of hair?
Maybe the lack of height. I don't know.
There's this though: