With the popularity of digital photography, everyone can now be a photographer, or rather take photographs. There is nothing on this earth that has not been photographed. But not every photograph is a good photograph, much less art.
What lifts photography to the level of art is the effort of the photographer to interpret reality, and not with ready made apps or action scripts. We cannot be forced by the tool, the instrument of our expression. It is absolutely essential to control that tool.
I have followed Alfred Stieglitz's motto: "It is not what I see but how I see it".
Post processing is for me essential to give each photo the "how I see it" part of the saying above.