If yes, this is a no-brainer.
Be warned, visits to cool places don't show the same things as living there, and some of what you're feeling is classic FOMO and grass-is-greener. That said, I left London for a Brisbane lifestyle and never regretted it, and I've seen many many cities in my long working life and I know what living in a cool HCOL city (London, Edinburgh, Amsterdam, Melbourne) long-term is like because I have.
I just prefer more average city life.