I don't really care how much someone in USA earns. As a software engineere in germany you are earning good money. There are no killings in cities, affordable health care, high quality living standards, university costs 150$ for 6 month, no donald trump, 30 days real holiday (i take them, everyone does, every year), seldom over hours, parental leave. Btw. IT is more than google, apple, facebook and twitter. And no we…
Devil's advocate: US economy, startups, and so on are stronger than that of Europe's.
You probably aren't going to do so well with a start-up in rural Mississippi or Indiana, mostly because folks don't have much money to spend on your wares, yet in some other areas it'll seem like they are doing well. Same thing with Europe. There are a lot of countries and economies and different regulations there and it is quite hard to compare with the overall thing.