Was he too focused on profit to think of starting a family?
O'BRIEN: That's your solution, Quark, huh? Treat women like property?
QUARK: Criticise it all you want. But on the Ferengi homeworld, husbands and wives never argue. There's no divorce, no broken homes, nothing but peaceful conjugal bliss.
O'BRIEN: If Ferengi marriages are so wonderful, why are you still single?
QUARK: I haven't met the right woman yet.