I'm torn between sending this anonymously to some people I wish I didn't know. On one hand, they'd be less creepy, on the other, I'd probably just help them hide the creepy.
Allow me to explain why unattractive and less socially pleasant people may gravitate to a fetish like this. First, La Loco has a point in saying, "Are hambeasts really that picky? Not in my experience." A fetish like this looks past the things that normally keep them from getting laid. And not because of the focus on a particular body part; after all, the fetish's uncommonness resulted in less-than-acceptable social behaviors, causing its infamy to compound over time, resulting in fetishists settling for such people. And, of course, even if they're not into the fetish at first, the aforementioned less attractive-and/or-socially-pleasant can learn to like or even love it on both the conscious and subconscious levels.