The question should not nessesarily be "Why do ugly men love beautiful women?", instead the question you should be asking is "Why are humans naturally attracted to beautiful people?". It also depends on what you mean by beautiful? I am going to go ahead and assume that you are referring to beauty that is only skin deep. You see, we as humans are naturally predisposed to being attracted to men/women that have symmetrical body structure and facial features. Since early times, having symmetrical features was directly related to an individuals level of "physical attractiveness", and was a sign that you were of good health. Which meant that the entire mate selection process would come far more easier for the men/women who's body/facial bone structures were symmetrical, compared to those who were less fortunate with asymmetrical features. If we look to the artwork of the Romans and Greeks that date back to B.C times, you will notice that the statues created are extremely proportionate. This was not done by accident. It is a common misconception that the media is the creator of "beauty", and has brainwashed us through commercials, TV, and magazines. This is not true. While the media does certainly (or for the most part) measure beauty solely on a scale of physical appearance, we as humans are already naturally attracted to symmetrical "pretty" people. This is why there is a market for beauty, and every magazine cover we see has a "beautiful" person on it. Companies know beauty and sex sells. Now I'm not saying that beauty is skin deep. I know it most certainly is not, and unfortunately some individuals miss the chance on meeting some amazing people as a result of being a shallow Hal. However the truth remains that when you don't know someone, the first message we receive is based on physical appearance (a message that decides whether or not we are attracted to that individual).