I was born in NSW and lived there for over 25 years. Moved to QLD and been here for 10 years, right around the beginning of QLD's dominance.
I have copped it big time, supporting NSW in enemy territory, but I could never change after all the memories I have of all those great NSW players. QLD mates reckon I can change now I've been here for 10 years. No way!
My son was born in NSW but moved to QLD when he was 1\. He's now 10 and still supports NSW.
Poor bugger sticks loyal to his birth state and I think more-so, me his father. I've told him he is well within his right to choose QLD if he wishes, but he better decide soon as he is getting to the age where he has to make his final decision. I wont have him chopping and changing as it suits him.
Nobody should ever change their allegiance once they have their heart in one side, even if you move interstate.