I WFH, but it's shift work, so I can't divvy it up throughout the day just so I can go to the grocery store. I'm staying at home for each 12-hour shift unless the boss explicitly gives me permission to go do something.
And I do it, get it done and am good at it. Dunno why some people aren't appreciative enough to do a good job WFH.
I think it's discipline rather that appreciation of having a job and taking personal pride in their work.
I'm not making a blanket statement, but I think if one is in a family with a stay-at-home spouse, the pressure to share the chores increases, the need to mow the lawn is always there, the honey-do list grows, the desire to do it now and save the weekend for play, etc.
For the single, solitary worker, perhaps the impact isn't so extreme, except for the loss of in-person social contact with others, which improves manners, interpersonal skills, civility, one's attire in public, etc.
-PJ