Student lives, are already highly complex with multiple things to study. There is academics and there is extra-curricular activities which are equally important now. Adding homework to it, might not be the best idea.
Often the simplest things are taken for granted, aren't they? The simpler the solution, the more unbelievable it is. Often as adults, we ponder 'How can the solution to such a complicated problem be so simple?' but actually, it is.