:wow, good question. i lived all my life in NJ and this year i moved to NC.
i will tell you why and maybe that will help your decision:
1. because NJ is expensive to live in if you dont make at least $80,000. if you dont make enough money and have to use credit for the simple things it can get really difficult to make ends meet. we were just paying our bills and we were both working full time decent jobs. we were both making the same salary.
2. the weather can get rough after a while. it gets cold, messy with snow, driving gets hazzardous sometimes. it can be depressing for some people. i dont know what the temps are like in AU, but i always imagine it so warm even in winter. i could be completely off.
springtime is like a week long, goes right into the heat and humidity of summer.
3. i dont know how the school system in NC is yet, but in NJ they are excellent.
4. there is culture all over and we lived within 30 minutes of NYC--which was great when we had the time and money to enjoy it. which wasnt really that often to be honest.
i was always afraid to move away from the nyc area because i loved it so much, but to be honest we werent always able to afford going there or with our jobs and obligations werent able to find the time.
5. taxes and auto insurance and home prices and renting in a good school system are expensive in NJ
6. NJ gets a bad rep for having rude people--as does NYC. not true!!! you will find the kindest most generous, funny, sarcastic intelligent people in both areas (NJ and NY). its just that they are so busy and stressed from having to live such an expensive life that they may not always stop to say HI or they may try to push you to go faster when you drive.
7. food, oh the food--every kind from every country, oh so good!!!
in NC
we are able to live on one income, we are buying a home in a nice area on one income, our auto insurance is less than half of what we were paying (and still using the same company); our taxes on our new home will be about a quarter of what we were paying in NJ.
people here are friendly(er). they are more laid back in some areas more than others.
food in NC is more expensive
you can find culture here and you will have to drive at least 30 minutes from any direction to find it.
things here are VERY spread out and you will need to drive everywhere.
hope this helps