I've never been to Europe, but work with many who are from there. You get socialized healthcare, cities with easy transit, and for the most part things are close.
In the US, we don't have health insurance unless we buy it ourselves ($$$$) or our company provides it ($). We don't have easy transit in most cities, and also people do live far away from the business centers.
That's why in the USA, most people want full time work. Unfortunately, the mega corporations that some of y'all work for ensure that this becomes harder and harder. Hope your RSUs are worth it!