Who are you kidding mate!? Most Pakistani expats wish they weren't Pakistanis. They admit it openly and discuss with Indians in private about possibility or rather Plausibility of undoing Partition.
I dont know where you are meeting these "expats" - whether its Iran or China but i living in the UK have yet to meet anyone that wishes they were not Pakistani. Stop dreaming - thank god for our forefathers creating our nation - i salute all that sacrificed so much.