One observation I have seen frequently made by all affiliates at PPD is that most of the modern dating struggle seems to happen in people of average attractiveness, perhaps from SMV 3-8. Very attractive people still pair off with each other just fine (although this begets arguments of what exactly very attractive consists of), and as many others have observed very unattractive people pair off more frequently than it would seem they should.

This is true in my observation. I noticed this while working at Goodwill in a very poor town, seeing a surprising number of obese fedorians pairing off with their female counterparts, while they scoured the store for samurai swords, anime VHS tapes, old nintendo games etc. I actually saw lots of excessively ugly/poor/fat people holding hands in the store. In high school, I saw the drama club and band nerds all dating each other, and nobody liked them outside of their enclave.

Have you witnessed similar trends? Do you have any hypothesis about why this is?