My 2c --

- Preaching about "Rastraprem" after failing to get GC/PR, or have unavoidable reason to return back, then there is no substance in your "Rastraprem" -- me does not like that rastraprem. Many returnees claim "I left this opportunity, that opportunity in the foreign land to come back Nepal", but such claims are generally false, they don't have proof to show if they actually held the position, or got appoinment letter.

- Most people returning back to Nepal are "opportunists or corrupt", because they don't want to pay tax, they want to take advantage of lawlessness, they don't want to contribute correcting the problem of country. E4N picks (from the link of nkmaharjan), politicians - Minendra Rijal, Mahat brothers, Lohani (you add more), businessmen, NGO-INGO samrats,  all enjoy lavish life at the cost of misfortune of the country. A few (like Mahabir Pun) have done good contribution, but most others have contributed only to promote lawlessness in one way or another.

- Whereas, most people staying out of Nepal, despite knowing that they could make a big difference in Nepal are "relatively honest" people of the world. They are law-abiding citizens, pay tax, follow rules, do not get involve in crime or corruption and do their job properly. They have become asset of their adopted homeland, they live there proudly and have happier life.

So the conclusions are --
- Good, honest, capable people leave country.  
- Opportunist, failed, (lato deshma gaado tanneri huna chaahane) people return back.

Ooops!! I think I am at a wrong conclusion.