> 1. You won't regret going to a 4-day work-week even if you do nothing that makes you money with the extra time. My wife did it over a year ago and she still talks about how it's the best thing ever and can never go back. We are a bit poorer, but quality of life went like 300x for that one extra weekend day.

I think the huge increase in QOL is, in part, because on most weekends, 2 days is just barely enough to catch up on the shit you need to do but were deferring through the week, get things in order for the next week, take a quick breath, and then dive straight into the next work-week. It's barely even time off. It also means you can't travel anywhere (to visit family, just a short vacation, whatever) and have a whole day away that's not also a travel day, unless you leave late on Friday and aren't going far.

A three-day weekend mean you can usually get at least one actual day off most weeks, versus an average of nearly zero entire or almost-entire days off with a two-day weekend. It also opens up a ton more options for short get-aways, and leaves more room for recovery and relaxation after any activities you engage in, making the whole thing far more relaxing and cutting out some of the urgency.