Most photographs are of life, what goes on in the world. And that's boring, generally. Life is banal, you know. Let's say that an artist deals with banality. I don't care what the discipline is.
I really try to divorce myself from any thought of possible use of this stuff. That's part of the discipline. My only purpose while I'm working is to try to make interesting photographs, and what to do with them is another act - an alter consideration. Certainly while I'm working, I want them to be as useless as possible.
I was able to work with two heads. If anything, doing ads and other commercial work were at least exercises in discipline.