Anyone with "self-esteem" will have some type of "standards" when it comes to choosing a mate for them self. What qualities you look for in a mate will vary from what qualities another person looks for. Chemistry is also very important.
Go to any mall, Wal-Mart, beach, movie theatre, festival, or church and you are bound to see some people whom you would not consider dating material but they have a spouse or significant other with them!
If you love yourself you don't spend a lot of time concerned with the mate criteria of other people. Everyone gets rejected either directly or indirectly. An example of direct rejection would be a man asking a woman to dance and she turns him down. An example of indirect rejection would be a man walking past a woman who is bobbing her head to the music and tapping her foot and the man instead asks another woman to dance.
In both instances these people may fall into an insecurity trap of trying to figure out (why) they were rejected. They start having (negative self-talk). "It's because I'm fat, black, white, short, have bad skin, buck teeth, crossed eyes, skinny, red hair, freckles, bald, a big nose...etc"
Once again I remind you to look around wherever you go and you will see people who fit all of those descriptions and yet "somehow" have a mate!
Most people would rather attempt to change the world than to change themselves!
Generally speaking people don't change unless (they) are unhappy. Instead of lambasting someone for their mate preferences accept the fact that there are over 7 Billion other people on the planet! Odds are in everyone's favor that we are someone's "type". The only person you can change is you. It's also easier than trying to change others!