I was abroad for almost 15 years many different countries. The only time I was unhappy was when I lived in my last country, Canada. That was very rough and I couldn’t wait to leave and go home after that. Which was ironic considering the fact that that there was no language barrier and it being most similar to my home country’s culture than all the other places I’ve lived.
I am from Georgia USA. 6 months of winter is pretty brutal to a southerner. My brain is just not used so much dark and grey. The cold I can deal with. Cost of living is pretty insane. Housing is a big issue. Healthcare being free is great but I wasn’t able to access anything in my five years time there besides an eight hour wait at the hospital. Less job opportunities for lower pay. The people are very polite but with Canadians there is this weird wall that’s really hard to break through to make friends. It’s a big contrast to the south where people are very warm and welcoming. If you’re from Europe, I’d say the difference is similar to Spain vs Finland.