Imagine a world where most people don't think information privacy is a big deal. Imagine a world where most people do think terrorism is a big deal. This is a hypothetical, so don't argue the hypothetical (i.e. whether information privacy is important or whether terrorists are a threat). Is it possible, just maybe, that a non-morally bankrupt individual could put those two things together and come to the good-faith conclusion that collecting large amounts of data to protect against a terrorist threat is in the public interest? Especially if that individual conservative but reasonable legal opinions stating that data held by private companies about their users are not within the scope of the 4th amendment?
That hypothetical is probably closer to reality than you'd like to admit. My in-laws are not afraid of the NSA. They are afraid of Al Qaeda. Many legal experts reasonably read precedent like (http://en.wikipedia.org/wiki/Smith_v._Maryland) to give a narrow scope to the 4th amendment when it comes to information in the possession of third parties. These people are not all "morally bankrupt." They just don't share your values and priorities.
Probably most relevant is that you'll never convince my in-laws otherwise by dismissing them as "sheeple" or be able to effect any change by dismissing anyone who interprets the 4th amendment differently as "morally bankrupt."