So you could your 40 hour work week back to 4 hours, that would just pay for healthcare, and healthcare only.
But when you are twenty I suppose one sees health differently. When you are 60 and take a bunch of pills to keep yourself from dying it suddenly all makes sense...
If almost all of GDP was healthcare, with costs dramatically increasing with age, then that number climbs for each additional month and reaches into the thousands. I wouldn't make that trade, especially because I'd be spending so many of those hours in my early to mid life.
Cuba's standard of healthcare is a reasonable compromise, and their total spending per capita is 2% of the USA's gdp per capita.
The internet as a tool for sharing information rather than an endless red queen's race of scammers is similarly cheap.
And yes please, let's get rid of the private automobile. Without it we can build dense enough that walking (or transit or bikes) will get you where you are going far faster than driving 5x as far at an average of 30km/h does now.
Sure! I like modern healthcare!
And then 4 more hours to pay for the rest of a 1920 standard of living.
And 4 more for extra disposable income.
Let's say that's two days a week for 6 hours each. Sounds pretty good.
But my choice isn't what's important here. What's important is that you don't have to give up the vast majority of modern amenities because those are usually very cheap.