Likely it has everything to do with blackboxing to not overwhelm users with functionality. No different from power user modes in all operating systems and in many programs. I like to turn things like this on, just because I like to have access to it just in case — but the likelihood of me actually using it is fairly slim — at least on any regular sort of basis. And I am a power user of sorts — but more on the light end: I like having the power, not necessarily wielding it… :P