One of the biggest reasons or may be the main reason why we fear going back home is, we are scared to be seen as a "loser". Let's admit it. We are scared to hear "Kye kye nai garchu bhanero america gayeko thiyo," or "teslai sakena america ma." But the reality is, no one really cares back home.
Your parents will be more than happy to have you back home with them after so long. And relatives and neighbors will bad-mouth for a while but they will realize that it was you who got the opportunity to come to the US and not them in the first place and will keep their mouth shut. And besides, do we really want to live our lives according to what other people say and think. OF course not.