Amzing! Admittedly the OP did ask somewhat of an open-ended question, but I don't think he expected to be attacked for his lifestyle, have his integrity impugned ("Something doesn't add up."), and be told how to run his life and how to raise his children. The posters who presume they have a right to demand information ("I've asked you twice ..") are amazing, as are the ones demanding that he defend his lifestyle or insulting it. In his responses, the OP is being far more polite than I would be if I were him.
I think the Dunning-Kruger effect is running amok in some of these posts (Roughly: Those who know the least are the most self-confident in their knowledge.
https://en.wikipedia.org/wiki/Dunning–Kruger_effect) Really, people, the OP knows more about his life than you you will never know. I think some apologies are in order but I don't expect to see them.
Me? I don't understand the $36K number but I remember the pre-internet acronym: MYOB. I actually applaud the idea that his kids will have a love of libraries instead of loving some vacuous ball-chasing game. But, again, that's none of my business. (And, no, I'm not interested in debating my opinion.) The OP obviously marches to a different drummer. I applaud that and even envy it a little. Go, @Figaro!