People caring for their nation i think is a case by case basis..... we might live in country A and we are born there and the government at A country keep demand high taxes on whatever area he can think of will only make the citizens there hate the country and not like the citizenship that they have, the other way round if people living in country B but was citizens of country A will like country B due to good government policies and they are comfortable living over there then will be more incline to country B citizenship.