I'd lime New Zealand more now. haha. Not so much a month ago. Never been there and the flight time and expense is a lot but its an interesting place from the looks of it. Australia doesn't appeal to me at all. Its interesting how different the climates are from one to the other.
It takes around a few minutes to warm up in a proper -25 rated sleeping bag one of which I always have in the car. Even quicker if one has a snuggly partner.
In anycase its seldom -30 here, and when it is not usually for long. Most winters you get one or two days that are that cold. In many places in arizona for instance it hits =40C for months and doesn't relent.
Also keeping in mind most places that have hotter summers, its not +30, its +40, and commonly.
The test of climate is whether you can survive nomadically in any specific region. Whether people were able to survive such places nomadically. To wit people didn't ever live in deserts, they crossed them, at great peril, to get to habitable places. People didn't live in deserts before AC. They did live on the prairies, they even lived in the arctic, because you could, and could survive. That isn't opinion, its fact.
Picture it like this. If theres a catastrophe you can survive a winter climate that has access to water. You could survive for years or endlessly if properly prepared. without power, energy, running tap water you would die in a housing development in arizona in days or weeks. With literally no chance of survival.
brownouts and power failures in many parts of the world are emergency situations.
ps it doesn't much matter if your car starts and the roads are melting and are too hot to even walk on. Yeah, heat is a hell of a problem, pun intended.
A devastating heatwave has left more than 1,100 people dead over the past month in India, and photos also show the toll on the country's infrastructure.
abcnews.go.com