They have a much better chance at keeping their kids in the Borg if they homeschool.
Maybe it's unique, but almost everyone that I know that was home schooled by their J-dub parents are no longer J-dubs...most followed this pattern:
Baptized by 13 years old >>> Regular Aux Pioneering from 14-16 (and interviewed at the Circuit Assembly) >>> Started part-time work at 16 >>> inactive/DF'd/pregnant/smoking weed and in a band by 19.
Some of my peers were recently considering homeschooling their young children. I asked "think about everyone we knew that home schooled. Where are they today?" Needless to say, they decided not to home school.