Looks aren't the most important thing. However if a person is single then most especially with massive egos would seek out only the best looking mates. It's a natural instinct. <br />
Personally to me I know what I like in terms of looks, and the man I've loved for the past 6 years isn't the most good looking person in the world. he's cute to me, but I melt and immediately smile back uncontrollably when I see him smile. <br />
Love doesn't care about looks. So technically if you were stuck with a man that isn't super attracted to you on an island for 1 year. Having to get to know each other and live together to survive, you may fall in love either way. Looks wouldn't matter. <br />
But give the man a hundred choices, such as putting him in a bar, or a billion choices by giving him access to the internet, and he will choose carefully. Often choosing (possibly doing some samples) for years before picking someone. <br />
But until the emotional attachment is there, it's only natural that we seek to attach ourselves with what we see as the perfect person. <br />
Some people don't live by what I said above. Some people do see comfort by the imperfections of others. They can find them attractive, funny and all sorts of other weird fetishy stuff. Some people are insecure and seek people they find less attractive on purpose for security. <br />
People will always have secrets. You never really know someone. So I don't think you should expect them to see the person inside. You have to show them girl.
Looks matter to guys (not saying they ignore one's inner qualities) as financial stability (money) of a guy matters to girls. This is just how our world works. Evolutional psychology.
Likely that the guys ignoring you are the ones who obsess about their looks. Check out the ones who are not on the cheerleader A-list, look for the person inside them ... no guarantees, though, guys grow up a lot slower than girls. Some will improve by the time you're in your forties.
That's a self-serving argument. Guaranteed that the guys you're not attracted to, who may have secret silent crushes, feel the same exact way.
That's the thing about silent crushes, you'll never know who secretly likes you, that's how they work.