Why do some people look at gorgeous/attractive people and say how sexy and beautiful/handsome they are but go for average partners?

For me there has to be an attraction in a healthy relationship. I mean NO attraction, NO relationship or chemistry. I mean personality is important too.
When my two friends and I were in high school, we were CRAZY over one direction back then! Also I was drooling for Taylor Lautner from twilight. I wanted to date him but I knew it was impossible. I was just dumb and naive. But my two friends ended up with average looking guys which is nothing wrong with that. I’m very happy for them and they are gentlemen to them.
Why do some people drool over good looking people but settle for average parters?