As advanced countries' systems for marriage and child-rearing continue to fail, there is a constant demand for cope. What if we learned to love being single? What if we substitute friendship for marriage? 64 ways to enjoy retirement on your own! This is the collective version of listening to an alcoholic explain why he doesn't have a problem.
Humans are social creatures. Meaningful interaction is literally as important as eating, drinking water, and breathing. We don't say we're addicted to those things; those things are just necessary for life (well, I suppose with eating there's shades of gray).
The concept of "exclusively pairing off with a romantic partner" is one of the most pervasive and universal patterns across all of humanity. Any culture. Any location. Any time. There are exceptions (polyamory shows up every once in a while), but they're vanishingly rare compared to the norm. Its not just cultural; its absolutely biological. Some would say its related to reproductive drive, but what's fascinating to me is: wouldn't one male / multiple female polyamory maximally optimize reproductive outcomes? I'm content in saying: I don't know why, but pairing is absolutely a biological need.
Loving yourself is important and great. But that's different from "loving being single". There's a long list of human needs, and there's really strong arguments that trying to shed them will just force you to look to fill that void elsewhere, sometimes worse (the most compelling one I've heard is how religion fills an amorphous-need-for-spirituality in humans, and without it we've turned to spiritualizing things like tech companies / cars / capitalism in general).