Good is the laid-back lifestyle
Drawbacks are the living expenses quite high e.g. Rental, parking, electrical appliances, food (Especially in Melbourne & Sydney)
One of the family of my relative, chose to come back M'sia afterall
Don't think that you can get your dream job with your qualification,
The property is extremely expensive in down town area, you might end up with bought a house at a very far location (suburb) can travel to work by train very early in the morning.