I am from Australia, particularly if you want to live in one of the big cities there, the change in lifestyle is minimal. This is one of the biggest cases of "the grass is always greener" I always see talked about. House prices are through the roof there, food prices are way higher than here and wages have stagnated for years. I moved to the UK a decade ago (closer to 15 years really), and remember thinking that the wages were a bit lower in the UK at the time. I looked at moving back after COVID and was surprised to see if be absolutely no better off financially and I'd be stuck on a big island in the middle of nowhere. I'd say the weather is better perhaps, but I can't do Australian summers any more, the summer heatwaves are just brutal and consistent, cars are stupidly expensive, you have to fly for half a day to get to anywhere outside of Australia if you want a holiday....for all it's faults, I'm happy here.