I think I'd have already gone completely insane if I were still a bachelor when this pandemic WFH experiment has been thrust upon me. I go stir crazy when I'm home alone, but I'm not really a social butterfly either. Work was a good compromise.
For one thing, I don't have the luxury of an entirely separate space to dedicate just to work -- my home office is also my bedroom and personal computer/gaming space.
And as others have noted, its just... way too easy to fall into a pattern where you literally turn into a technological anchorite. I have refused to let myself use food or grocery delivery primarily because I realized there was a point in the depths of 2020 when I hadn't left my apartment in almost two weeks, and it really frightened me how easily the time passed, in a beige blur of life.
This is the issue with all of these anti-WFH posts and threads. It was in the midst of the pandemic, where you were not strongly discouraged from leaving your home and socialising. I imagine if there was no lockdown yet everybody similarly worked-from-home, the answers would be markedly different.