Our personal experiences, environment, or beliefs would most likely correspond to the specific type of literature we consume.
For example, if I see someone addressing climate change, ads to recycle, or even someone littering, I’m may be drawn to read about the effects of climate change and what we can do to stop it. Or let’s say you believe in communism, someone may want to read about the key figures such Stalin, Lenin, Marx, etc…
So basically, our own experiences, environment, or beliefs will guide us to the direction of literate based around our interests.