titchy I don't think you understand
there are all sorts of lessons you can learn from primary homework -- and basically, academically, primary homework is not that important except for spelling and maths
what is important are the lessons you learn/teach about self-management, the value of homework, the repercussions of not doing homework, study skills, research, self-motivation etc etc etc. This bit I do think you understand. But it goes deeper than that.
Homework is very, very important later in school, it's crucial. That is the point where we as parents have very little control over how much they do. It needs to be a positive choice. It is possible, by being too forceful, to give them entirely the wrong messages. It is possible to show them that homework is nasty and boring and something you hate, something the teacher doesn't really look at, something that's given just to keep you occupied, something actually rather pointless (and brighter children are highly likely to spot a pointless exercise).
And on top of all that, on top of Mum saying come on, you must do this, it's really important, leave your baking/swimming/lego/friends, it's important for school -- on top of all that, if the child still doesn't do it, the school has little come back except for "disappointment" or "not being seen in a favourable light". Children can become immune to that very very quickly indeed. So what does that message give? It gives the message that actually Mum was wrong, the school doesn't think it's that important, the teacher doesn't think much of me, and why bother.
I think your comment about the paki thing is rather ill thought out but I understand you are trying to make a point. It doesn't really work though.