>>>Why would you ever photograph with another photographer?<<<
My son-in-law is a photographer and one of the most fun times I've had was when we went shooting uptown together (dragging along my son, daughter, and another close friend). One other time we went shooting together (we did split ways) and I had real fun, though those are probably the only times ever I've done that. I'll say, we do work (or is it play?) quietly. I think it's just rude to interject too much when one is busy creating.