I generally like having roommates, but when they're bad, they're BAD. I've also never done the communal cooking thing. Either they don't cook, are bad at cooking, or have dubious food hygiene. I haven't met any potential partners through them either. I might take a walk or swim with them but I sure as hell didn't get OP's experience.
Makes me think humankind has been enshittified too: crappy parents/educational system creating more crappy humans, instead of "high quality" ones.
But then again, I always realize how far civilization has come when I enter a public toilet: not far at all.
I look around my messy apartment and realize I'd also be a not-great flatmate.