For the same reason some people like buying local, or buying hand-made, or buying "Made in <insert country>". People aren't robots, and we know the consequences

For the same reason some people like buying local, or buying hand-made, or buying "Made in <insert country>". People aren't robots, and we know the consequences of our actions are not limited to the current moment and on the current side of the black box we happen to be on as consumers. Further, even in cases of pure observation, where there is no monetary, verbal, implicit, or indirect support - e.g. just looking at a piece of art we didn't pay to see - we care about things that are not represented solely by the observable qualities of an object, especially when it comes to art and craft and the effort of people we admire. This is obvious, though. This part of human nature will never change, and there is no argument that can confront it, and no reason to want to formulate one unless: A. It makes you money. B. It appears to have dividing lines that match a larger culture war in which you have emotional stock.