Re: "That's all we need more tools for them to invade our lives"

Look, I agree we don't want govt prying into our private lives (it violates the Constitution if there's no indication of a crime being committed). But "they" ALREADY HAVE this software and more.
FYI - The FBI and other law enforcement often send confiscated Mac drives to the Royal Canadian Mounted Police because THEY have even better ability to "hack a Mac."

So, if YOU happen to have the $$$, it's kinda nice to be equally armed and serves a legitimate need if you're just recovering your data from a trashed Mac HD. It's cheaper than a lot of professional recovery services. And you MIGHT get into that business yourself if you want to recover the cost of the software.