I also thought that Sarah Westerberg's comments centered on "commitment" in yesterday's University Devotional Address are connected to this discussion. When we make the decision to become instructional designers or take a position at the university that puts us in a position to impact student learning I believe that we are making a commitment to do everything we can to enhance learners' experience.
This isn't to say that I am perfect in this area. I catch myself drifting into the convenience mindset all of the time--I think that is human. The important thing is that we continually remind ourself of the commitments we have made as educators and find ways to keep our working engaging enough that it is satisfying to go beyond the minimum in our work.