Personally, if I were to take the oath, I want myself to mean it. But I understand ppl give up China nationality for some practical reasons, like visa. Being a traveller myself, I understand the frustration of being required visa almost everywhere we go. and that costs us some opportunities at work. But I'd rather work harder to prove that I am an indispensable employee, so that my employer/clients would be willing to go through all these troubles to apply visa for me.That being said, I wouldn't see people who change their nationality differently. It's their choices. The one thing that the island country has taught me is being tolerant of different opinions and believes.