I'm on the road at the moment - teaching several different classes in Chile. It is excellent. I've got enthusiastic students from different contexts and I get stretched as I teach a wide range of subjects. (This trip I'm teaching OT2 Joshua-2Kings, an introductory night on Creation to New Creation, and Doctrine1 in which we look at the knowledge of God.)
I also get to see fellow CMS missionaries from Australia which is always encouraging for me, and for them I hope.
Having said all that, I found that I agreed with much of what Trevin Wax said in this article, particularly his point about preaching to the same group of people week in and week out.