I think if you are driven and motivated US is the right place for you because you can attain your dreams easily. If you are laid back and hope for the best, you might run out of your legal status pretty quick. If you are really good at what you do, doors might open up for you. After a certain time, all open doors might start to get boring, but then that could happen anywhere. You might get infected with a same sh|t different day virus, but then that could happen anywhere. US might be the ultimate place to go, but after you've had enuff of the ultimate, the green pastures in Nepal doesn't sound too bad. The grass is greener in Nepal although a bit dirty.