Is it ever really true, except in their own minds?
A new study shows that marriage (or rather, the expectations of marriage) is detrimental to women. www.telegraph.co.uk/science/2016/04/22/wives-become-less-stressed-after-their-husbands-die-study-finds/
When you add in the rates of violence against women by men, why does this myth of men being protectors prevail?
And if it doesn't (not convinced) why is it still perceived by a significant proportion of people that women without a man are lacking? Maybe that's simply still function of perceived worth being determined by the man you get?
Rambling, but thinking. (and I am pretty much convinced the answer is "patriarchy", to nail my colours to the mast. And, yes, I know that many of you don't know men who think like that).