It's a tough decision. Covid suddenly made travel so much harder, and it's still horribly expensive, although I can at least get on a plane now.
When I return to the UK, everything just seems easy, I know how everything works, and my extended family and friends are there. Obviously I miss that. I miss the food & our winters and summers are extreme compared to the UK. I miss being able to travel around Europe.
BUT - 3 hours to do what should be a 45 minute train journey? Queueing up for petrol for over an hour at 11 pm? Not being able to register my father's death because of lack of services? My father actually dying because of the shitty handling of Covid? Being unable to afford a house anywhere near my family? I've had some really terrible experiences with the NHS - the kind that can kill people and alter your life for the worse. When I taught in the UK I was constantly sworn at, threatened, disrespected by children and parents and berated by school management - and I was a higher skills teacher.
I live in the US. For a modest fee I get great healthcare (so much better than the NHS, I honestly think I may have died if we hadn't moved to the US), I love my job, we have an amazing lifestyle as our housing is affordable compared to the UK. We're in a (relatively) left-wing, liberal area and people are incredibly friendly and helpful. There's a lot more space, beautiful scenery and still near a big city with all the facilities that offers.
The UK is quite a culture shock every time we return - noisy, dirty, crowded, (so crowded!) expensive and aggressive. But it still feels like home.