Homework

As much as I hate the concept of homework, it's the necessary recitation of information to help us retain what we learned early that day. But while it's necessary, it's over used and seems to become busy work so many nights of the week.
My brother screams daily while sitting at the kitchen counter, 'Why do we go to school? who even came up with homework? It's so stupid!' And then we try to explain, it's just part of school and it helps you reinforce the things you learned today. He continues to mumble to himself, still furious, but he has some credibility to his nightly tantrums. He is swarmed with so much homework, as many of the students today are, and already knows how to do it but is forced to do it in fear of dropping grades.
Why when we understand a concept after 5 questions, must we do 25? I think teachers need to understand that we have other classes and other things we want to be apart of. By no means teachers, don't stop giving us homework, i don't think I wouldn't have learned half the stuff if I didn't do it at home, but understand that if every teacher gives us 25 problems, that may not seem a lot, but multiply that by 6 classes and that's 150 problems, 120 of which we probably are so bored with that we start screaming inside just like my brother does every night.
So no, homework is not pointless, no matter how much you hate it, but it's use and importance has been exploited and use against students. 'Why can't we just allready know everything!' my brother is screaming in the other room.