I will set the record straight. I have a foot fetish. To be honest, it's not extreme like that dude on True Life.
I don't like just any feet. There is a particular kind. They have to have a somewhat even tone on the soles and the toes have to look like you're had a pedicure at least once in your life. Jacked up feet with like bunions fungus and callouses are disgusting and I would almost consider leaving a girl for that.
The root stems deep in the subconscious and I believe the history trails back to the Feudal Age. Serfs and peasants would have no shoes and their dirty feet symbolized poverty, while the "princess" was likely well taken care of, and her feet were pure and free of grime. Clean feet symbolized purity, and the poor serfs would have kneel before them.
When I see a pretty girl with clean, pure feet I think "wow, she's a princess!" and I couldn't keep my tongue off any part of her, including her feet. I would treat her like the princess she is. Nowadays that should validate everything girls aim for, they really take particular care of themselves and try hard to be viewed as "pure" and clean. When your feet are perfect, the rest is gravy.
As you see, it's not a love for all feet in the world, just a special kind.