Is expressionism less than abstractism, realism less than romanticism? No cultural utterance is less than another in my opinion. There is a value, no matter how limited in every photograph, every poem and every painting ever created... But in the end it is all down to personal taste.
However, I have a predisposition towards things derived from emotion and instinct rather than overly deliberate thought processes. A photograph that is the result of a feeling on the street is worth more to me than a photograph that has been mulled over in a studio for two hours. Likewise, a painting by Cy Twombly speaks more to me than a painting by Michelangelo. And the same applies for street photography and photojournalism versus for instance fashion or still life photography.