Worked for who exactly? An entire gender that has, for almost all of history in almost every society, been ignored, oppressed, controlled and frequently raped by men? Hardly.
We're not out here trying to convince men that being able to have sex with multiple partners throughout their lives is a good idea -- that part comes naturally to us.
Not by women. Obviously it's not that simple, but that is a true statement.
Also, do you believe women would not be competing for resources if there were no men, and are not competing for resources in general?
The reply asked worked for who? Then out of nowhere you're talking about men being killed in droves. Are you saying that monogamy didn't work for either gender (one that lost their freedom and and the other that lost their lives)?
Theirs is a borderline flame bait comment that added nothing to the discussion.