When I started to go to Karachi university. One observation I made and I used to talk to my friends about was that the girls who were in higher classes like last years of their bachelors or masters were mostly average looking. If we came across some pretty girl she was either be married (nikah) or engaged. Share your thoughts if you like.
I don't know if they get married earlier or not but pretty girls do get away with murder though.
Unfortunately it's the sad reality that MOST people are willing to bypass the most defective personality traits to have a pretty wife/bahu.
Phir bhaet kar sari umer rotay hain!