A lot of bad writing focuses on causality. It's this Freudian psychoanalytical bullshit: 'What is the A that led to the B?' And more often than not, the reasons are never explained, or they don't have identifiable points of origin.
Starting out, you have this sophomoric idea that you're trying to reach people, and what you actually discover is that you're talking to yourself. The things you are trying to explore are things that you need to explore. To the degree that other people find it entertaining, enlightening, provocative, what have you, that's a happy byproduct.
The creative act is fundamentally a selfish one. We all have our biases, our prejudices, our political views, our agendas as people, but I don't think that's why you get up in the morning to bang your head against the wall all day long to try to figure out the irrationality of the human soul.