Work.

I do not, for one minute, miss working. That said, I received an email today (well actually several days ago, but I just checked it) from a former student. She is now at Drexel University, and emailed me with an article in which she thought I'd be interested. She then went on to say that this must be why teachers love what they do--when their work has an impact and a student continues to think about what went on in the class.

Of course, the class in reference no longer exists in the school and has been replaced with more academic subjects, but what can you do.