What is the best country to live in Europe?

The UK at the moment, but after Brexit I will be changing my answer!

Germany.

Belgium

Australia and Canada is my favorite countries in europe. Lots of fun in both countries.

The UK, Always for residence.

Switzerland- For me Swiss comes out as the best place in Europe to work and live.

Monaco

ENGLAND OR FRANCE

I spent over 13 years living in Mirandola, Italy and loved it there. I can highly recommend Italy - beautiful art, architecture, scenery and music, interesting local festivals, great people and food. Beaches, mountains, lakes, the ocean, historic sites, world class museums and galleries and a lot of varied things to see and do. The best part is the wonderful Italian people. It's very easy to get out and explore Italy and further in Europe using the trains or budget flights. At a high level, life isn't all that different; you still need to work to support yourself, shop, cook, clean house, etc. It's the details that are different. Life tends to be more relaxed. Rather than driving everywhere i tended to walk or bike places. Life was generally at a slower pace. There were frequently things going on in town and local events tended to have something for the entire family. You could stroll into town in the evening and see a concert, dance recital, play in local dialect or other event in the piazza two or three weeks a night in the summer. The local market was Saturday in the town where I lived and then would move on through other towns during the week. There was a local antiquaria (flea market) the 2nd Sunday of every month where the streets were filled with merchants and people browsing/socializing.

That's a viewpoint question; there is no one right answer.