I agree wildfig - but it is all part of the same package I think.
To not be part of a couple and breeding appears to transgress against some deeply held cultural norm to the extent that many people I know appear to be prepared to put up with unhappy or stultifying relationships ... but at least they've bagged Their Man. Or, even better, that man has impregnated them and they have proved their worth.
Whereas as a single mother, my fertility is not in doubt but on the flip side of that, we get a lot of stick for being responsible for all the ills of society - pandering to men's base instincts in that we let them shag us without taking responsibility for us and then we raise hoards of feral children at taxpayers expense (Daily Mail tm)
It is interesting to wonder why this contempt and dislike for women who don't follow the conventional path? Is it part of the patriarcal hegemony to try to keep us in our place? Interestingly, only women have said really vile things to me but I guess that doesn't discount a patriarchal plot.