One of these days, I'm going to publish a book of all the pictures I did not take. It is going to be a huge hit.
What counts is putting the intensity that you yourself have experienced into the picture. Otherwise it is just a document.
Photography is not simple documentation. Even though it's mechanical, you should use the camera for the expression of some kind of feeling - empathy, sympathy, love, hate or whatever it is. And if you don't capture it in the moment, it doesn't get stronger afterwards. While photographing, you have to employ your mind, your soul and your heart!