OMG... I can start this post saying that i was a humongous cheater in school and now in college i'm a total different person but sometimes i just fall with temptation haha.
I don't think this is totally bad (if you don't see it in a religious kinda way) because there are some stupid subjects and classes that are SO NOT RELEVANT in our lives and there's no reason to waste precious KB or GB in our brains.
I think you should copy when you feel something won't worth the learning.. that's it. COPY TO PROCEED AND STUDY TO LEARN.
I'm such a bad influence, sorry xD