I don't think I was overoptimistic. It was literally the best decision I ever made, in every aspect I can think of.
A lot of folks mention the lower salaries in Europe (generally, and especially for tech): has mattered much in your (personal) experience for quality of life and happiness?
My quality of life is insanely better. I live in a walkable small city in the south. I walk to the grocery store a few times a week. I bike to the library or to the train station. My job turns off at 5pm and I don’t work on the weekends unless I want to. Even then, that weekend work time can be substituted for work during the week.
The biggest downside for us has been the cost of traveling back to the US to see family. It’s very expensive for us to fly home since we also need to rent a car usually. Even saving 1k per month, that’s a significant part of the yearly savings just going to buy plane tickets for one big trip per year. After we have kids, I suspect grandma and grandpa will be coming here to visit more often because we can’t afford to fly with a family of 4 or 5 more than once every other year. Not to mention the tax implications of spending too much time abroad.
If you can afford to try it out, take a 90 day visa and just chill and see if the lifestyle works for you (including remote work). Worst case scenario, you go back to the US after a year if you hate it.
However, this is not for everyone: While you can be more sure of keeping your job in rough times, you can also be sure that the lazy idiot 2 desks over will keep his job. And you can be sure that any change will be resisted because change is seen as inherently bad and threatening, and reasons will be found to shoot down your new-fangled fancy ideas. YMMV, to each his own, etc.
I just wanted enough to buy a house and raise a family, and I could earn enough for this. A comfortable middle class life in a nice neighborhood.
I also appreciate the safety nets and worker protections here in Europe. I recently went through a serious medical condition that in the US would have me bankrupt. Here I had no issues.
Had I moved to the US I would by now be either dead or broke.