When we express our desires for our own personal racial ethnicity as first dibs is that it's rooted within us. It's biological encoded within us to be attracted to similar qualities and familiar characteristic s. Now understandably we all as individuals do seek that individualism and we should embrace that too. We are not cookie cutter people, we have our uniqueness about ourselves and often times seek what would compliment and complement ourselves, our needs, our wants.
When we refer to boys and girls, we are reflecting on our past experiences on those. Semantic memory is what makes us who we are today and helps us makes our current decisions based on those past experiences. When we refer to men and women, we are recalling more closer recent experiences as since we are of that category. While semantic memory still plays a great role, we often are using the mnemonic memory of which we choose often of current societal influence. Again our core values of who we are and what we choose to tolerate, embrace, or even discard/reject.
We all know our level of adaptability, compatibility, or even comparability. It goes back to what we will tolerate, embrace, or even discard/reject.