A lovely human a world full of not some lovely humans

Well.... it’s somewhat complex. The first issue is conflating bias with prejudice. The two are intrinsically linked but not inherently one. Preference generally comes from bias. There is some aspect we value which one thing better fulfills or is a higher priority to us than another. We prefer that thing over another. Bias is in our biology. We are wired to want certain things like reproduction- even if our minds override biology. It’s a survival imperative.

So there is certainly sexual bias at play in gender or sex selection of a partner- we are effectively discounting people who would validly serve our desires in a relationship if not for their sex, “discrimination” is often used as a dirty word but we use discrimination in daily life in ways outside social bias such as food selection, choosing a job, deciding between two brands to purchase etc.