Pretty girls = easier to get along with

I'm 30+ and ever since I was a teenager I noticed pretty girls or even decent looking girls tend to be easier to get along with than ugly or less attractive girls. If I see a woman with an 'attitude' 9 out of 10 she ain't attractive or just ugly.

I remember one time at the club 10 years ago I almost got into a fight with a ugly girl because she tried to cockblock me from getting with her friend. Her friend was fine, a blonde looking like Jessica Simpson before the baby. She was approachable and looked like she was having fun. Guys tried to get at her all night, bought her drinks, tried to get her digits etc. Meanwhile her friend, a darkskin, overweight girl with weave and a hat on, was looking angry all night. Probably because she was sour no'one was trying to give her any attention. While I was talking to her friend this b*tch had the nerve to cut us off in the middle of the conversation talking about they had to leave. I told her to fall back because we were talking and she tried to talk back to me. I got heated but friends I was with and a bouncer I knew difused the situation.

Why is this? Why are pretty girls easier to get along with? Is it because men and people in general treat them better because they look good? Sound off...