Everyone is for themselves.. We are lucky to find someone who would think good of others.. Eventually everyone would think of themselves down the line.. In a place like USA, i dont think its good to expect something as such where people would want to see you do good.. Yes there are few good souls who would genuinely look out, but those good souls are hard to find..

I myself havent found anyone in Nepal, so I would expect people to be as such in USA. But then we are mere humans, we trust, and we get betrayed all over again :)