Search Results: consider someone to old to be attractive

Just a question I've always wondered. Like do hot people know they're hot? Ugly know they're ugly? Etc?

Since I constantly see those "Am I ugly? RATE ME?" questions, and I wonder if these chicks (mostly chicks) are attention seeking, legitimately curious, etc.

As for my original question; let's say you think you're hot shit, but everyone/majority thinks you're fugly "she's acting like she's cute, why is she so confident?"
Or, you think you're ugly, but everyone/majority thinks you're pretty "why is she so insecure, she's beautiful!"

So, who's right? Would the person opinion of themselves, or the majority? Or a bit of both, or neither? Is it the old adage "beauty is in the eye of the beholder", whoever is attracted to you determines it? Who determines if you're physically attractive? Is it healthier for one over the other? Here are examples of what I mean:
-Like let's say someone is so obese, that it is affecting their health. But they think they're the best looking, and should not change? Everyone says this person is ugly, and should make changes not only for appearance, but health as well (their sincerity of concern of health is questionable but doesn't matter in this scenario). This person doesn't care, s/he thinks s/he's beautiful, and doesn't what to change.
-Or someone who's really attractive, but doesn't think they're good enough/good looking enough, so they starve themselves. Everyone tells this person that s/he is beautiful, and to stop obsessing. But s/he doesn't care about anyone else's opinion, s/he thinks s/he is ugly and wants to change.

So, who determines if you're attractive or not?

*Bonus question, what do you consider yourself?
*AS USUAL, INSECURE PEOPLE, ENTER AT YOUR OWN RISK!*