Irrelevant analogy. You can't change country super easily but you can stop being a Catholic in 5 seconds if you decide it.

Apostasy is not that quick or easy. Depending on a country the church can fight you on that.

Any example?

> you can stop being a Catholic in 5 seconds if you decide it.

How does one officially leave the Catholic Church?

Sure, you can stop attending church and taking communion, but you're still on a list somewhere in your parish(es).

Being on a list means what? How does that impact your life?

Some places have church tax based on your religion, such as Germany. I've heard varying claims from locals about the difficulty of leaving organised religion, though for me as an Auslander it was as easy as just saying "none" in the right box when setting up my tax ID.

I am aware of Germany but that's an exception. In no other (developed) country are your taxes tied to your faith.