For a more sustainable future, we need to embrace living in smaller spaces. This means not letting our houses be our primary space for every activity in our lives
Smaller, well insulated, medium density housing. Alas nothing like the current dystopian sprawl of Australian cities.
House mates don’t stay strangers for long. Lots of people value the social side of communal living. It may not be for everyone, but many people do enjoy it. You have your own space in a share house, but communal spaces are shared.
I’d say the disconnect here is the design of houses in Australia don’t lend themselves to communal living situations.