Do you think students should have homework?

Studies have shown that homework does more harm then good. Students are getting to many assignments a day and that is causing stress, anxiety, depression, and lack of sleep. Children are being over worked because they are coming home with homework after eight hours of school especially students who strive for perfection and AP students have 4-6 hours of homework a night. Unfortunately some students cant get their homework don't because they have other things that needs to be taken care of at home. So heres the question should students get daily homework? Is there a certain amount?