It would be difficult, I think, to WFH if you lived alone. Except for doing charity work, my wife is usually at home, but does not interrupt me while I am working. Having friendly neighbors and friends who live near by is good also.

I used to work exclusively in my home office, but transitioned to also working in other rooms, and sometimes on our deck. I think that I take a productivity hit doing this, but it is fun to mix it up re: working environment.