In my country, the primary residence is taxed way less.

Sure but there is a point where moving elsewhere becomes almost mandatory. For many highly skilled people in poorer EU countries, migrating to the Imperial core is a no brainer.

Payment for surgery to doctors who arent allowed to be paid, in a failed universal healthcare system. Or doctors who want to tax evade. This is a necessity if you want your poorer country to keep any decent doctors. Because why would any doctor work for 1500€ when they can easily migrate and find a job for 10k+.

B12 isnt easily absorbed by the body, thats why supplements and food have wild daily portions, so even if you pee most of it, you still absorb some.

You can do things for free or cheap but some things have so long waiting times, that you opt for private doctors, which can be somewhat cheap, at least in comparison with the US and because there is “competition” with the public system.

Some countries have it, not all or even most. Sweden is not representative of the entirety of Europe.

In Greece you arent even allowed to camp outside of very limited designated camp sites(though laws in Greece are more like suggestions, so many people still go camping in forests).