I'm a creature of habit and the scenery of my commute is diverse enough that changing my routes wouldn't make it any more interesting. For the first couple of years I did make changes now and then to make the route more pleasant, faster, and/or safe.

If I have errands to run or just want a longer ride, then I'll take a different way home. Usually though I've got reasons to be home sooner rather than later so I take the quick way.