[euroclear]

Having a mustache isn't an innate trait. A person could shave or (possibly) grow a mustache, but they cannot change their date of birth.

[hyperpape]

So yeah, bad analogy from the parent poster. But what's the point of quibbling?

There are other innate traits that might factor into who we date, something about how they look, perhaps?

[OpieCunningham]

True. I edited to reflect personal preference.