On social issues average European and its country is way more conservative than average American. You're comparing economical standpoint here and I agree with that.
Dubious.
On what social issues are excatly Euros more left wing compared to Americans?
> ask any non-European person who has lived on both continents where he feels more welcome.
I gladly concede this, but this is just one element of social issues.
> Universal healthcare, unemployment benefits, workers' rights, LGBTQ rights, prison policy, police behavior and control, social safety net, lack of religion in politics, free or extremely cheap education including higher education
> Matter of a fact in Eastern Europe...
Thats why my first answer was: Certainly not Western Europe. My knowledge of Easter Europe is nonexistent, so I won't dare say anything about their circumstances.