How often do you crop?

We don't need to carry the ghost of our instructors around with us everywhere we go. Classroom "tyranny" is nothing more than a teaching method. Class is over. You aren't still redoing the same high school algebra homework every day, right?

What I really don't get are people who refine an image only to then chop off part of it to fit a piece of paper. I cut the paper to fit the image.