People care about origins and purity for several important reasons. The former is important because it is about where you come from and what gives you your identity. That's a really important part of our humanity, since, if your identity is broken in some way, you may not know exactly who you are. If you don't know who you are, if your identity is fragmented, then you will have difficulting figuring out exactly how to act. Purity is about maintaining an identity over time, since an identity, by definition, is something that is marked out by boundaries. When formally articulated, these boundaries are rules or laws. By sticking to the rules that define you, the esse ntials that define the essence of your being, you maintain an identity from its point of origin. In a normal traditional world, this is not a problem, because traditions are deliberately about preserving identities. However, the modern world is clown world. Traditions and conventions of one kind or another are continu...