Comment by ergonaught

Because the education system is garbage;

because the parents are idiots;

because of the paranoid delusions about Them and What They Are Doing;

because the kids (and in many cases the teachers) are awful human beings that people (idiots or not) don't want their kids to be around several hours a day every day;

because of school shootings and other forms of violence;

because the value in this is no longer clear to anyone;

because the only people demonstrating "leadership" in this matter are leading outraged mobs around to prop up themselves and their power structures rather than anything productive.

Or, in our case, our youngest has autism and ADHD and was unable to be successful in the "not homeschool" environment (for numerous reasons), so we removed him from it.