Some of our friends or colleague give an assignments a lot to the students, because they want their students learn some thing beyond the students capability. Its bullying in education or what??
I do not think that we have to give students a lot of assignments. If these assigments go far beyond students' capability to understand such assigments, then we are, to some extent, wasting our time, and this can be considered as a from of bullying. If these assigments are at the reach of students' abilities to understand them, then we may be fostering their cognitive abilities such that our students come to be able to dispense with us qua professors. As I see it, the ultimate goal of a good or even excellent professor is to do his/her best such that his/her students comes to be able to dispense with his or her professor, that is, to overcome him/her in terms of knowledge.
The main purpose of assignments is to increase the learning capabilities of students. The more we use our brains, the more they develop. This is a proven scientific fact and this is the principle behind giving extremely creative and involving assignments to the students. Students learn a lot more when they read or practice something by themselves.