Because we're all human beings and we all think slightly differently to each other. If I wanted to only work with people who exactly agreed with me about everything, then I would only be able to work alone.

I'm not talking about things that are red lines for me, just preferences. If it were something that caused me dissonance I'd move on again, I promise you.

I'm lucky enough to have the background and the aptitude to get a new job whenever I want. Most people aren't that lucky.