Eh, I think this is only partly true. I don't think it was the act of a male settling down that's unnatural. I think what disturbed her was the fact that a male was the head of a household (harem), which is essentially Keeper culture. Seekers and Keepers value completely different cultures, and would easily find the opposite extremely offensive. We do know that some Keeper males do settle down (there's a quest in South Shroud that explained how multiple females can have a "breeding male) so it's not unusual. If the delivery quest did anything, it was to confirm our fears that males are second-class citizens (sorry RPers, time to modify those characters). Most probably become "wanderers" simply because they have limited options for stability in life. They are only needed for sex, and have no other value. Even the ones that do settle down are probably under full control of the women and once their usefulness has ended they are sent on their merry way.