Why has the world become so polar, Black or White, Right or Left....It's not a zero sum ga

Why has the world become so polar, Black or White, Right or Left....It's not a zero sum game. Grey is also a color. Being Right or concertative on some issues and Left on others is also poaaible. Middle ground is what we all need to find. We also need to agree to disagree on issues and respect each others right to their own views. Think about it. It's really not that hard