I have a friend who photographs monuments at the Gettysburg Battleground. He recently showed me some very nice prints he did of these where all of the monuments were centered in the frame...sort of a snapshot quality to them. I asked him why he shot them that way and he said he saw no reason to compose using the rule of thirds just because he was supposed to do so. That blew my mind.---Nothing to do with shallow depthof field, I know, but the point is that he chose to simply disregard what some may call a most basic element of composition--Just because he felt like it. This was a learning experience for me.
I have seen all manner of photographs with razor thin DOF, it's clearly a popular thing. So naturally I asked myself if I were simply shooting wide open to follow the fad.