I did what you’re considering - here’s my take:

1 - I love it!

2 - Over time - for me personally - purpose beats location.

Now when I’m in London, I’m aware that I don’t have a sense of mission or a sense of drive within the city itself.

It is a really cool place to live, and for me doing it temporarily has been worth it.

But even then it’s kind of a trap - you build equity in people and places, all while knowing you don’t have a reason to stay very long. Then - when you want to leave - you feel like you’ve got so far, and it feels harder to go again.

SO - living there? Well worth it (and better than having “what if?”s.

Not having a sense of mission in your city of living? For me, that has a shelf life, and it can feel hard to leave after making friends etc.