To be honest I would have been deeply uncomfortable with that. My SF-86 was invasive enough and I later found out that information had been leaked in a hack of OPM. I would have absolutely imploded if it included background from my childhood.
From my point of view, the government already has most of my most personal stuff due to my time to CPS and what my parents told them (and possibly made up).
Anyway I've handwritten it, I guess the rest is up to their security lol.
But yeah, that's terrifying if people that know me would have it; information is power after all.