You gave 3 options:

1. Migrate to other countries: I'd definitely say "NO" to this option. There is no point of starting from the scratch again.

2. Stay here : Try to visit Nepal at least once in a year. Have your parents re-aply for the VISA may be after 6 months/1 year.

3. Go back to Nepal: You yourself presented a valid reason for this. You don’t like the US life anymore (may be lack of family touch). Other reasons might be : you got property and cash money which you can bank upon your future.

In m opinion, option 3 got more weightage than others.  Share all your details/issues with your parents. Trust me, they got this supernatural power to provide the solutions. Be transparent at least with your family and let em’ know about the different possibilities.
 ~GooDLuck