Why is that crazy ? From what I've seen the standard of living in the US is actually really good if you're a skilled professional in a high demand field and the labor market is more competitive - better than the EU IMO.
Which is why I'm not sure why I see so much US negative comments around here and this smug EU stance - like just recently I heard from two former coworkers that got a job at similar role/experience level one in Munich and one in Chicago - the guy that went to Chicago got 60% higher salary and his cost of living is roughly similar (didn't go in details TBH).
Also on a personal and cultural level I prefer working with Americans - with Europeans there's so much posturing and pretending to be professional and formal (with skills usually lacking).