Do you automatically get PR after 5 years in NZ even though it's for education purpose??

In the UK, residence for education purpose doesn't count towards getting permanent residency.

Actually, in Australia and NZ - most people can't find a job even with very good education qualification. The most common reason is because they "do not have local experience". Even senior ppl that migrate there have a hard time finding jobs. It may be easier if you have an Australian or NZ qualification but then again, I also know ppl who already has PR there, lived there and graduated there yet can't find jobs there. Believe our fellow member ineser here also experience the same thing.

As for food, I've been traveling to many parts of the world and I can say that food is not really a big problem at all. Almost everywhere you'll find a "China Town" no matter how small it is. Could even find Malaysian Satay in some small town in Europe. If you go to Australia, you see Malaysians almost everywhere and restaurants that sell all sorts of Asian food everywhere. The supermarket overseas do sell rice, of course more expensive but still got. In NZ (and I'm sure many other countries as well), there are huge chain supermarkets run by Chinese that sell all sorts of Chinese and Asian stuff even frozen pandan leaf, durian and so on. You wanna make ba zhang, just go to the shop and they can bring out all the ingredients you need to make it for you. Of course we will always miss Malaysian food but to many, it's not a problem at all.

Weather definitely will be changes. Can one adapt to a 4 season country? How bout snow? It's a hassle when the country has snow too.

I disagree with your other points but I agree with your last. I still prefer to live in Malaysia.