It's not that good. Now travel for millions of Americans is becoming more of a hassle. This suits the political agenda of the EU because it wants all of Europe to be a single country run by itself and doesn't care about collateral damage along the way or even revels in it (look how big and powerful we are). But in the end it's still just making travel harder for people, despite all their rhetoric about how freedom of movement is one of their "four pillars".

There is no obligation for countries to always get bigger, or for countries to pretend there's no regional variations. ESTA is a pain and stupid and it gives me a worse impression of the USA every time I have to fill it out. There is no reason why the rest of the world should follow suit.

I see nobody else has said it yet, so I will - I hope that after Brexit the UK can drop this ETIAS nonsense and be more welcoming to Americans, even if they don't drop ESTA in response.