Next generation needs a beautiful mind. An original, high self worth, self esteem, self confident and self respected gen. Better looking body makes a better thinking, responsible, self respected person. Not so good looking, makes for a low self esteem, low promoted, low overall person who turns narcissistic individual who tends to be a crab for all small disturbances. A weakness always tends to be a reason for looking down upon themselves. A strength always tends to be a reason to be superior over a crowd making them a leader or teacher of a principle they need to learn.
Who wants a negative, sulking, slippery, inferior product? Nobody in their right mind tend to value an inferior graded product, why would they do any different with a person. One possibility of a good looking person is they don't have to worry about one weakness at least (people don't insult me based on my looks). One obstacle cleared, many to go.