Incompatible vs not interesting, hmmm, that's a good question.
Someone who has no sense of humor would find me an awful annoyance. I would have a hard time curbing my enthusiasm for puns. I'd say incompatible.
I'm also quite fond of small children, large dogs and the great outdoors. I could deal with a man who prefers cats, but not one who hates children or lives in a Lysol bubble.
Anyone allergic to cellulite could not possibly live in close proximity to me.
Since I will not leave my current family responsibilities, anyone who would insist on me relocating (more than a short drive) automatically disqualifies himself as a potential love interest.
If, however, he were simply bound to a location beyond my scope, that wouldn't be incompatible, that would be circumstantially unavailable.
Incompatible = we would drive each other nuts
Not a person of interest = not available to me