I'm curious whether most people already live where they want to live, or if affordability is a big factor in their decision. If cost was not an issue, for example if all the major cities, towns and rural areas had roughly equivalent prices, where would you prefer to live?
Personally, I like quiet, warm areas near a river or beach, but I also like diverse populations, history and culture, so my first choice would be a quiet suburb in Sydney, not too far from the harbour or beach, my next choice would probably be a quiet outer suburb of Brisbane, close to the water, and my third choice would be a quiet, coastal or mountain town or semi-rural area somewhere in NSW, QLD or VIC.
Somewhere warm.
This as well as job availability. No use moving to Darwin when you get paid 25% of what you earn in Sydney.