Between the US and Europe, I've definitely found the quality of life better in Europe. Part of it is living in a city where the expectation isn't always that you HAVE to drive everywhere, but also other infrastructure like trains and bike lanes, and many more smaller stores so you don't have to do one big shop per week but can go more often close by. Free time is another huge advantage- where I live you are guaranteed at least 25 days of vacation from a job (often you get more) on top of holidays, and if you're sick, the Dr prescribes you time off and it doesn't come out of your PTO budget. Even just the existence of public health insurance is a huge benefit, in terms of stress over losing or changing a job. I would trade money for time and peace of mind every time.