Don't get me wrong, the US is great and there is probably a lot of room for nuance in what I am saying here and I am most likely wrong. So take this with a grain of salt:
Things that seem better in Europe (most developed countries in Europe at least): universal health care, better privacy protections, better political situation (seeing as the US is a flawed democracy [1]), and many other quality of life things [2].
You could argue that if you are rich, these things touch you way less in the US, which is true. But I also like not having to drive through poverty on my way to drop off my kids somewhere. I also enjoy knowing that where I live people don't end up in the streets due to getting some illness because of fictionally high health care costs.
1: https://en.wikipedia.org/wiki/Democracy_Index 2: https://en.wikipedia.org/wiki/Human_Development_Index