Yeah, I tend to get too emotional about 14 dead innocent people.
How do you feel about the millions of people who use encryption to protect themselves from thieves? Protect their lives and identities from oppressive dictators around the world? From unwarranted spying by our own govt. that swore they weren't doing it? You put a lot of stock into 4th A. protections, but Vlad Putin doesn't GAF about those, nor do the Chinese or any other foreign power, nor do criminal hackers who have stolen US govt. data repeatedly.
The real pity is that, in your shortsightedness, you fail to realize this will do nothing to stop the criminals and terrorists. Virtually unbreakable encryption programs already exist that duplicate Apple's built in methods, such as PGP. It is free, simple, and already widespread and doesn't depend on Apple or any other hardware manufacturer.
This will, however, open up a method for breaking into the casual, everyday user's private data, their contacts, banking, financial communications and more. That you cannot see that is the true intent of the FBI's tactics, after seeing the same crap pulled under the Patriot Act, makes me wonder at your naivete.