It works if you substitute "willing and able" for "willing", which is the usual context of this discussion. If you are willing and able to date a supermodel and you don't, well, why the hell not?

(FWIW, I personally have little interest in supermodels...but then, most people would consider that lack of interest = "not willing", so the logic still holds. Like all logic, it obscures subtleties - I'd be quite willing if she were a good match beyond being a supermodel and I weren't already attached - but then, this is a problem generally with imposing words on the world, and not with the specific instance.)

The parent in this thread literally said "willing".