After a full night at the bar and enough beer, no woman is too ugly. As the old joke goes:
What's the only difference between Foxes and Dogs?
3 or 4 beers.
Heck, why do you think Dwarves are such famous drunks?
Look at it this way. You have an entire race of which all the men spend as much of their waking time as possible drinking themselves insensible and which has a very low birthrate. You do the math. The "fathers" are the ones who got caught before they passed out.