What's the PURPOSE of doing questions?

We're told to 'do questions' when we study... and I tell my students this ALL the time... and they avoid it. They WANT to pass, they're prepared to work hard... so why the avoidance? What I want you to pay attention to in this video is the disconnect between what I'm saying (or your lecturers!), and what you're hearing... BASED on your belief about the purpose of doing questions. My point? If we believe the purpose of something is 'abc', and someone tells us to do it doesn't line up with 'abc'... we're not going to do it!