Same as I said with Tits that's what you get when you put commissioners fantasies before players enjoyment. This isn't really a game, it's a circlejerk of people trying to one up each other's OCs with non commissioners looking at it and trying to see if they can sift through something with some semblance of interesting content.
Anyways it's not like your usual kids have much interaction, I mean even going to the nursery you have 0 interactions with kids. I guess it was too hard to put generic scenes where you could play around, teach or train the kids.
If this was done as a real game with player content centered they should have random name generator (or player input named) for each kid you have and potentially have generated quests (kid got sick, kid(s) ran away to play somewhere dangerous, kid feeling lonely etc) (Which would end up making your life harder if you make too much kids, take your damn responsibilities)
Fucking vanilla (heartfire actually, meant non moded) skyrim has more content with the adopted kids than this game focused on breeding,
tbh the thing I like the most about Kiyoko is how you can "thicken" her but damn the number of pregnancies it takes for her to get to 9 tails is stupid