End users don’t even know what’s best for them. My family acts like I’m a conspiracy theorist when I talk about privacy. Yes, that’s anecdotal, but I’d bet most people would behave similarly. Consider the sheer amount of articles in popular media about Facebook’s privacy violations. Now consider how many people in your family either haven’t heard about them or simply don’t care.
Even other tech-savvy people don’t care. I can’t tell you how many times I’ve heard the phrase, “what do you have to hide?”