I'm on a DS9 rewatch, and it's strange how Quark seems so attracted to Human (the women from "If only wishes were horses" / Trill (Jadzia Dax - maybe Ezri as well? Not there yet, don't remember) / Bajoran (Kira Nerys and his dabo girls) / Klingon (his wife) / Cardassian (Natima Lang) / Boslic (the purple-haired smuggler) women.
It also seems to extend to other Ferengi, as Rom and Nog seemed quite taken with the woman from Little Green Men.
Yet, none of them shows attraction to Ferengi women (Zek does, to Ishka).
I can understand a Human being attracted to a Vulcan (Sarek's wives, Charles Tucker III), given the small differences in appearance. Same for all possible combinations of the races above, they don't look that different from each other.
But Ferengi do look very different from those races. To me, it seems as alien as a Human being that is attracted to sentient Kangaroo-people, and never showing any interest in other Humans.
Of course, the Doylian explanation is that the episodes were written by Humans, and mostly Human males... but can we think of a Watsonian explanation?