Have you been to India and seen the absolute squalour and poverty that exists? I guess the net happiness in the world increases everytime some poor indian scams an american. The american is momentarily pissed off and wiser about scams, while the Indian has got a lot of money that will improve his living standards considerably.
Not every American is wealthy, and none of the Indian scammers are the Indians living in absolute poverty. Have a look at this scammer and his resume [0] and tell me how this college educated criminal defrauding Americans who aren't very tech savvy "increases the net happiness of the world"?