if you live in Nuneaton, you’re not going to be enjoying vast, dramatic beaches
In fairness, that's not all you won't be enjoying if you live in Nuneaton...
OP, I hear you. Unlike you, I've moved around a lot in adulthood, to different countries and continents, and I can say that I have been far happier in some places than others, not because of anything internal to me but because some places suited me more than others.
My son spent the only period of his life he remembers in a village in the midlands -- it suited him perfectly, but it's the place I've been unhappiest and most bored out of anywhere in the world I've lived. So I moved us to another country last New Year, even though it involved uprooting a seven year old from all he'd ever known, and putting him into a new school system and a different language. He has no additional needs, so it's not the same as your situation, but I have no compunction at all about recognising that my needs matter too.
Despite the fact that we'd barely landed before C-19 shut things down, and we're still living in a series of rentals for various reasons, it was a good decision.
So, while I appreciate the point that people are making about your own fulfillment, regardless of place, I think it's not at all true that everywhere is much the same. The people who say that either haven't moved around that much, or have always moved around between the same kinds of place.