Purism is bad for photography, art, and life:

Why purism is bad

If one believes in purism, it almost feels quasi-racist. Why? Racism is based on notions of a ‘pure’ race, or a “chosen” group of people. To be a purist is to not allow admixture. And if you don’t allow for admixture or a hybrid approach, you limit yourself. You become close minded. And to me, open minded is a virtue; closed minded is a vice.

Pure is weaker

Pure gold is very weak. Alloys are stronger!