Do you really need to crop?
Although photo editing programs nowadays seem to have all the basic (and advance!) editing tools a man needs, you have to keep in mind that not all the tools you see on the interface are beneficial. One of which is the cropping tool.
Before you start cropping all your images, you have to ask yourself, “Will the photo look better if I crop it?” If you answered no, then don’t. Sometimes, cropping results to a “cramped” photo. You have to keep in mind the nature of the photo’s subject. Sports photographers, for example, seldom use this tool because they feel the need of their photos to “breathe”. The action is not focused on the ball (in basketball for example) only but all the players surrounding the offensive player are vital.
Photo taken from http://www.unionsemester.org