And the wonderful solitude and quiet of my old house in a dying town contrasts sharply with my college years living in apartments.
Some of it is the rhetoric about owning a home being part of the American Dream. Some of it is about the nature of the US housing market being a such an avenue to wealth (Americans have a disproportionate amount of their wealth wrapped up in their home). Some of it may be the individualistic mindset.
I would love to live in an apartment complex in, say, Sweden, but there's a huge cultural component to apartment living in America that would have to change before it matches apartment living elsewhere. Even if building codes changed tonight it would still wouldn't address the issues of city design/public transportation that hurt the very notion of living that tightly together to begin with. It's just not at all convenient to live in an apartment complex that's miles away from the nearest public transportation hub or even a strip mall.
These sound like wild assumptions with nothing to back them up.
https://basc.pnnl.gov/code-compliance/air-sealing-and-insula...
"Many builders are insulating these walls fully for sound proofing purposes per the International Building Code (IBC), Section 1207, Sound Transmission walls, partitions, and floor/ceiling assemblies separating dwelling units from each other must have a sound transmission class (STC) of not less than 50 for airborne noise when tested in accordance with ASTM E 90."
Also the comment I replied to said 'americans' not 'in america'
This is not unique to America, all the countries that went through rapid urbanization that moved millions of former farmers from detached homes into city apartments have an archetype of a rural rube unable to accommodate to communal living with strangers.