It's not about investment at all. It's simply about being able to come home to Nepal as Nepalis
As I said earlier, you become a NEPALI by heart, that piece of paper doesn't make you Nepali. Sorry sir, simply being able to come home to Nepal as Nepalis is not a valid reason to get dual citizenship. You can go home without having a Nepali citizenship card, can't you? If you think that card is the only thing that will make you a Nepali, then God help you ammend your thinking before he makes the politicians ammend the law. Why would I be jealous towards people who want Nepali citizenship? I already have one, man; there is nothing to be jealous about! But to be honest, you (and all other NRNs) really don't need one. 
Talking about the law made 100 years ago, US still abides by the Bill of RIghts proposed back in 1789. Now you might say, well that's for good of all people and that's what makes it still effective. But all might not think so; some might think that some points on the Bill of RIghts are not what they want. But the law is law, either follow it or get a really good royal spankin from the law enforcement  for not following it. Same is the case with this dual citizenship. It's not important, NRNs don't need it to go visit Nepal so stop crying over it. If you really want to go home and stay there, denounce foreign citizenship, and keep your Nepali citizenship.

Btw, I know what maiden name is; I've written my moms maiden name many times on forms, thanks for the demo though.