Should schools have homework?

My opinion is that schools should definitely have homework.
 I realize that people mainly children, will strongly disagree but I think this should change. Kids enjoy no homework because the free time they have after school. They enjoy doing their after school activates with no worries about having to get homework done.

 Having homework is a good thing because we learn outside of school, and the knowledge that we are getting in school should be carried on at home. The work at home doesn't have to be pages and pages maybe just a few rows, of math equations or spelling words. Homework should be in all schools. What do you think?