About this... I find that if they're going to put a handful of children thoughout the game (who almost look exactly the same), they might as well not put any. There is this thing with games where, I won't notice something is absent until you decide to put a few of them, and then it becomes an obvious "wut?" thing.
For instance, I hadn't noticed or tried to notice or paid attention to the fact that there were no argonian or khajiit children (or Dark elf or orcish or etc.). Had there been 2 of each in the entire game, it would have stuck out like a sore thumb. Maybe not as much as with the current human children though. I guess with the "odd" races, you can always rationalize that there are very few, but with the humans...
It's the same with how they put like 3 patches of wheat outside a main city, which just serves to help you realize that there are not enough farms in the game to feed everybody. In the end, you could *almost* say that you might as well not put any farms.
I'm sure there is some game designer term for this dilemma.