suman ji ,

congrats for being the citizen of the USA, for lot of the nepalese its a dream come true. and i also admire your emotional attachment to the nationality that you are so proud of and want to be remain that way.  well there is always a rift between legality and morality and the emotions we all go through.  I dont think that the nepal govt would be happy to strip off its citizens of its citizenship once they acquire citizenship of any other nation. Thats why now they have issued NRN cards and they are en route to issuing a citizenship cards but wtih some limitations to the NRNs which is a very promising thing for lot others like you, and the future is not as bleak as you think of.

but my point is , we should not be limited to a piece of identity when it comes to your loyalty and faith to your country and people. as sun spreads its warmth no matter how far away it is, you can make your presence felt by your actions, bring the same warmth to the country and countrymen, no border, no paper or no nationality will be an obstacle .  Personally I would be more than happy to see an electrical engineer working in a micro hydro power in a remote village in nepal rather than going off the subject and doing some programming  work in USA to make big bucks. But very few have the guts to make a big decision like the first one. 

So its about making a difference, if you are able to do that nepalese wont consider you just a citizen, they will hail you as a hero, or u just want the piece of mind that you have two citizenships and you have both the doors open, u will be lost in oblivion as thousand others are.