Hey Mika. I'm not sure if I should answer this because I'm going to say basically the thing that you're tired of hearing
Looks matter... but they matter only as much as they matter to you.
I'm sure it's tough being a young girl in a society that has gone out of it's way to make looks matter so much to one's self esteem and peer acceptance.
Imagine how much more interesting and stimulating life could be if people could be made to understand how much more important what's inside a person's heart, mind, and soul are. Imagine not having to live life by someone else's false and shallow rules.
Feeling good enough comes from inside... from the soul. From who you are and what you think and care about.
Those girls you compare yourself to may be fine with the game but at what cost to their soul and to their development as humans.
Sorry for saying something you're tired of hearing but this is just my view of what makes life interesting and rewarding.