Its the single most important characteristic someone needs to have.
I like to imagine the people downvoting this are vapid, miserable assholes who are angry because every relationship they've ever had has failed, in flames, because their now ex partners told them they have awful personalities.
Sorry, I don't know what you mean by that, I just wanted to tell you in a humorous that for me your comment doesn't come across in the way you maybe wanted it to. To be more explicit given the topic, it sounds like you are making negative assumptions about others. Many people will perceive that as unattractive.