There are benefits to being sexually attractive. People will treat you better if they find you attractive, and you will probably get better treatment every where you go. You will also probably get a better spouse, and overall live a better life than your less attractive counterparts. It is good to be pretty.
Our society puts great emphasis on being sexually attractive. Studies have consistently shown that those who are sexually active are helped faster by associates in shops, are offered jobs more often than those who are not and receive more attention in general. The ability to command a presence is a definite benefit to being sexually attractive.