Theoretically, I photograph for other people. As a portrait photographer, people come to me to be photographed. They pay me good money for the prints I make for them.
In reality, I photograph strickly for myself. They are just subsidizing my passion to make portraits. They are providing me with the subject matter. Occasionally, I do my own projects, but more often than not my clients are my only subjects.
A very enviable position, I know. I'm very lucky.