Uh... There ARE children in this game. You run into them from time to time in quest.
What there aren't are child sprites... Which leaves said children as weird man-babies. Who look like normal to slightly smaller adults, and yet the dialogue is clearly painting as just kids.
... There are also quite a few NPCs around the towns already whom you can't even "target" much less "kill".
I adopted a couple of Skyrim kids and liked Lucy stocking the chest with alchemy ingredients...but I'm not playing tag with any of them. I have too many writs to do.