It was Warren Buffett that summed it up best:
The odds for me to have been born in the US were 1 in 50. I won the ovarian lottery. If I had been born in Bangladesh, the chances are that I would not have had such great opportunity.
If you don't believe him, visit GlobalRichList.com. Spoiler Alert: if you earn $850/year, you are more wealthy than half of the worlds population. The idea of the site seemed a bit snobbish at first, but the purpose of it is to show people that they earn much more than they think they do, to encourage charity.
The United States of America is the absolute worst place to live in the world, except for all the other places.