1. They grow up to be more self-responsible due to the social structure of self-reliance after 18 years of age. Most of them start working and earning something by the end of their teens. I am impressed by the concept of trying to fund one's own undergraduate education with one's own penny; even though it often involves taking student loans- still it makes them self-responsible.
2. They don't suffer from the "I am a rich parents' kid" syndrome: dignity of labor is utmost. Most of my American friends I have seen, started working in some Mc Donald's or Subway: not because their parents did not have enough money; but because the joy of earning one's own dollar is marvellous!
3. I also have seen them cherish the ability to respect independent and variegated career decisions. I have often seen them to respect a History major person even if he or she is doing Physics.
I would always want my kids to grow up in US: despite the common desi notion that kids here lack parental attachment. I disagree, because kids in India often get entangled into parents' never-terminating pamper, which I think is not a great idea for development of the kid's personality. Hunting and accruing one's own identity, being able to take one's own decisions and the realization of the necessity to be self-dependent is very important. And then, after all, values begin at home: if I am able to impart the right education to kids about moral values, the topographical coordinates on Earth just wouldn't matter any more!
Nevertheless, there are always light and shades to both sides of the coin! Upbringing of kids in US has also its short-comings: the vulnerability to get into bad habits (e.g. smoking, drinking at an inappropriate age, doping etc) and more. But what I have learned looking at the manner I was brought up and several other friends and acquaintances of mine both in India and US, that culturing the right set of values begins at home. Being parents whether in US or in India is never an easier task! Yet, the first and the last education begin at home...