It is extremely unfortunate that individuals/groups think that prejudice is therefore justified if physical/sexual attractiveness has biologic/evolutionary underpinnings. Individuals have rights which should never be violated under any circumstances. Prejudice is a violation of those rights. As per Steven Pinker, a biologic explanation or even a cultural explanation of traits will always be misused by some person/group to oppress another person/group but that does not make it right.

I have friends who are both "attractive" and "unattractive" but all are equal. Once you acknowledge the golden rule (which also has biologic origins), then a person's physical attractiveness are merely a personal preference and not a tool for judging another.

Also, an individual who is physically attractive today may be unattractive in the future and vice versa. And idiocy pervades both camps. Some of the good looking dumb fucks on TV who wish to reproduce and spread their IQ barren genome or their dumb memes to their offspring makes me puke.

As a final point, I should end with sexiness. An individual who is "unattractive" with the right evolutionary derived dimensions (eg. low waist to hip ratio in a woman) and a sexy attitude will likely arouse another individual's libido.