I would say NOT crop, or crop less. A lot of time cropping makes our photos more interesting, also composition could be improved. On the other hand if we dont crop, we are keeping highest image quality and the focal lenght of our lens. Not cropping is easy, but making a good photo at the same time is hard. And good photography should be difficult! The harder it is, the more satisfaction we get and photo takes in more value.
D800 24mm at f8 1/200, 1000 iso
Without cropping you become a better photographer!