David gets a lot of homework and sometimes it becomes a chore--for him and for us. I'm much stricter than Kinneret and I generally insist that he complete it. Aside from the educational utility of homework--yes, I know this is a matter of debate--I feel that the more times we let it slide then he will become even less likely to do his homework and will in general develop poor homework habits (as well as become increasingly emboldened in his defiance of our authority).
On the other hand, there has to be a limit to how far we push. I don't believe in doing homework just for the sake of doing homework and there has to be some type of pedagogical gain. If at some point it becomes obvious that he is too tired and there's no way for him to absorb anything, then what is the point of pressing on? Why torture him and ourselves?
So where is that line between fostering good homework habits and educational progress on the one hand, and torture on the other hand?