There is really nothing absolutely great or not great about returning to one's home country. If you can make a better living there, can create opportunities for yourself there then certainly it's the best way to go. If not then one still has to make living and there is nothing wrong with making one's living in a non native country if the opportunities are better.

If one has chosen the path which leads to fields like banking, business, agriculture or hotel management definitely there are opportunities in Nepal. But if one is into nuclear science, physics, aerospace or sth that involves selective technical skill, Nepal is still decades away from it (perhaps not so much in IT industry) and so perhaps the only thing that will be left there for such people is to find a so-called highly respected job (if one is lucky enough, that will perhaps involve attending seminars, posing like a scientist and giving speeches and perhaps travel to different countries every once in a while.

My personal experience so far has been that education here does not teach so much more than what is taught in nepal (speaking about technical education) although resources here outweigh heavily the resources in Nepal to teach. The opportunities (esp in technical fields) definitely are incomparable. Doctors educated in eastern world have more advantage compared to ones who get their medical degree here in terms of time required and exposure.

Pay rate of an engineer in Nepal is far inferior to someone working in bank or one of those big name INGO's like ICIMOD and UNDP, it's not like that here.

So it's a matter of personal preference. Nothing absouletly   +ve or -ve about it. And at the same time money is not everything. Here it comes at the cost of having to stay away from family, festivals and culture..