Just providing a cautious view: living on an island sounds like a fantasy but in practice it's very isolating, many supply chain issues and it can be hard/expensive to get a hold of items produced off the island
Well, maybe. There are some island towns with lots of community , even expat communities. I actually found it easier to make friends on these islands then in a big city.
But the supply chain issues are big, if you want electronics ( in my case for Panama ), you get on a plane and go to the US to buy them. Same with any major medical care.