Re: “good looking”
You are right. But this usually happens in arranged process. There is no wrong in marrying a good looking person. However, if you know a girl from say your workplace and you are impressed with her, the way she talks, her respectable manners etc, but she is not very good looking, I think you should go ahead with proposing that girl rather than ignoring her just because she lacks good looks.
Yes, in the arranged process, guys tend to go for good looking girls and are encouraged to do so by their moms and sisters.