I think being conventionally attractive gives you a lot more chance practice socialising and my observation is that, people who use that chance get so good at it, they remain very good at relationships even at old age.
I know a ~55ish year old lady who is beautiful, but looks 55. I see her adjusting to her new reality and its painful. I imagine she used to be able to get away with being mean and sarcastic because she was so hot.
Now it just causes office fights. "I wont work with X" is something Ive heard.
The interesting part is that I originally only worked with her on the phone, so I always thought she was mean... Then I saw her in person and everything clicked.
Some pretty people are mean because they can get away with it and never learned that it's often counterproductive in the long term.
This is just some people, others act differently.
I don't think it would be evenly distributed, but it goes something like that. You can choose to behave confidently up to a point, but people reject such behavior from an ugly person. Ignoring this social feedback can get you into a lot of trouble.
>I've always found the physically-unattractive-but-socially-attractive especially interesting because they've succeeded, often along with a very cool peer group.
Some of these are brutal too. I've known some real busted dudes who got attractive girls to like or marry them somehow. I assume it's often money, connections, and/or encountering the right person who is a sucker for your particular characteristics. Imagine being the ugly brother or nephew of a solid 10 (guy or girl), or being a multi-millionaire. You'd easily get many times more opportunities in all areas of life.