I don't get it, so you think I don't want to live in a place like Barcelona? Seriously? Of course I do!!
I can understand people having different preferences. What I can not understand is refusing to believe that people don't love living in a place like Barcelona.
> who on earth wants to live in tiny terrarium that costs $4000 a month
Why not ask the people that live there rather than pretending they don't exist or that their desires don't deserve to be allowed? Seriously, this is a strange way to think of other humans, seeing that they are right in front of you but trying desperately to pretend that they are fundamentally fooled, or nonexistent, or don't deserve to exist, or something. People pay waaaaay more than $4000/month for a detached home, and far less than that, but only they exist as people with valid desires, somehow?
I don't think it's clear at all that Americans "culturally value" space more. We have done lots of top-down planning to prevent density, disallowing it in nearly all places. But it's hugely in demand, and far more people want it than we allow to live in it. This despite nearly a century of media, law, and political movements on both the left and right vilifying cities as places of disease, crime, and inherent poverty.
If people didn't want to live in these types of places, why is it necessary to ban them? We should definitely legalize missing middle, but also legalize far more dense walkable urban areas, at least enough of them so that they are cheap to live in rather than the most expensive form of housing.