Ah everyone else is doing it, well that makes it ok....
One of the old 'rules' of espionage is that everybody spies, everybody knows everybody spies, and nobody talks about it. (everybody in this case, being national intelligence services). By creating such a massive systems that was bound to be discovered, the NSA has torpedoed US national interests in a spectacular fashion. Nobody trusts the US to behave as an altruistic custodian of the Internet now, and they have caused untold billions of dollars of economic damage to US companies. Ironically, it is quite likely that national networks will become more secure, making it harder to do any spying in cases where it might really be important. I have no problem at all in spying on anyone who isn't American, at least when it isn't a billion dollar waste of time tracking all the calls of Dutch house wives, French bus drivers, and Australian auto mechanics. They have created all sorts of mechanisms to get around the letter of the law preventing them from spying on their own citizens, in order to track Muslims who are brown skinned, most of whom just happen to not be connected to terrorist groups.
Basically these stupid NSA fucks got greedy and have killed the golden goose, and shredded no end of domestic laws to do it.