system
Given the following post, respond as if you're commenting on Reddit:
human
I don't think it's immoral to have racial preferences in one's sex life. CMV

Judging people based on their skin color is a subset of judging people based on their appearance, i.e. it isn't any different than judging based on height or jaw line. Of course, judging people based on their appearance is immoral in hiring, politics, platonic relationships, etc., but I don't think it's contentious to say that appearance can amorally be considered when choosing sex partners.
gpt
To clarify, you mean on aesthetics only, right?  If your reasoning was "I don't want to date a black girl because blacks always steal from you", then yeah, that would be racist, but if you just mean you're not into a particular look, then of course that's fine.