Some counterpoints:

> when work is done, I leave, and it's done.

My experience from WFO is worse: task may be done earlier, but feels wrong to leave earlier, and colleagues may not take it badly.

>not using my resources (electricity / broadband / etc) for work

Gas is more expensive than electricity, so I'll take the tradeoff. Even better if you can reduce the number of cars in the family - purchase, annual fees and insurance, etc.

> easier interaction with colleagues

A pro and a con: good for collaboration, but also easier to be distracted when trying to focus.