What? Sorry but yes it is. Of course attractiveness is primarily determined by thousands, probably millions of years of evolution. That doesn't mean that personal preferences are not based upon the individuals arbitrary likes and dislikes (rooted in genetics). You even say that "a big part" (not 100%) is genetics. Which is absolutely scientifically proven to be correct. Our sexual preferences are based in genetics.  Attractiveness is beholden to our genetics and environmental influences.  Each individual does not have the exact same preferences as another individual with the same genetics (take twins for example) One may like blonds and another brunettes   You can not take ones genetics and say, “this is your genetics therefore you will find this person the most attractive.”  So yes the majority of attractiveness is based on a persons’ genes, and we are programmed to like people with certain proportions, waist to hip ratio, aka not fuckin fat pieces of shit. However there is some personal preference to the equation, which makes the problem SOMEWHAT based on opinions, AND opinions are subjective.  I can see where we might collide, when I say “logically all attractiveness is subjective” I do not mean that the entirety of the attractiveness is opinion, I am trying to say that every sexual preference is somewhat subjective.  Anyways I think we agree.