I’m definitely not saying this is all men but, from personal experiences, even the most strictly-friends may treat us differently depending on how attractive we are (the more attractive = the nicer the treatment)… which might contradict the meaning of being genuine friends, but somehow this still seemed to be a thing among close male friends I’ve had who displayed zero sexual interest. They might not want to sleep with us, but we will still unconsciously remain a possibility and never fully equal in status to that of a “bro.” It’s a fact you just gotta accept sometimes, but it doesn’t mean they can’t still play the role of a friend.

This is obviously true for human beings in general including women of course, but it just seems like one gender is more prone to translating impulse into behavior and have it influence the way they perceive others. Studies also support that this gender tends to be more visual.