Your line of reasoning reeks of Europe worship with a token exception for obfuscation purposes. There are tons and tons of people who live in places like Boston and SF and Chicago without cars and do not feel any worse off for doing so. I used to be one of them. I would go so far as to say these people can enjoy all the opportunities of city life. Are they a majority? Probably not. But that's mostly a figment of how these cities absorbed their urbanized suburbs in the 20th century.