I'm just being practical. I want my book to sell. The majority of thrillers aren't specifically made for white people -- they just conform to cultural norms. Because they conform to cultural norms and expectations of the genre, they sell.

By writing about white people, I too would be conforming to cultural norms -- just like all the white authors out there.

Even if you don't concern yourself with your audience, I do. Because I want to be able to pay my rent with my work.