We can't watch ourselves from the outside. It's just too much of a split of attention, and unnatural to boot. There's nothing more disquieting than watching yourself on film, watching yourself move in real-time, out of time. Photos are different, somehow, sometimes. Or the time they capture is different, a footnote or a memory.
But the point is we don't film our lives because we have to allow their unfolding as if there were no audience (because there's not, not really). The stress and strain a perceived (or actual) audience imposes is too synthetic and therefore uncomfortable--hot and ill-fitting. There is no script. There is only sweet, improvised, authentic and genuine interaction--occasional awkwardness, impatience, and embarrassing interludes aside.
The fewer the writers, the fewer the theatrics.