It's really outdated, an artifact from earlier times when life was tougher and we needed a high output of births to offset the high mortality rate of children and people in general. Women are far more valuable than men reproductively speaking -- they can only make a finite number of babies in their lifetimes and there is at least a 13 year lead-in before they are fertile, and once impregnated they are out of commission for about a year, while men can impregnate many women and downtime is only about 30 minutes or less. So relatively few men are necessary to keep a given population viable, but conversely if most of a nations's women are killed or die, it will take hundreds of years before recovery, if ever. [Population growth is an exponential function.]
Children are the future and have always and will always be protected. It is very bad if a society loses many of its children, or is not producing enough, which will lead to an aging society that is doomed to be conquered or die out.
It should always be children first, but now, after the evil hand of feminism has tried to destroy the family and our culture, they have brainwashed women into becoming pseudo-lesbians/pseudo-men that don't want children, (their most important, valuable and cherished function), and only have a very low number of children if the do disobey their lesbian separatist masters. So, after "feminism," women are no longer of higher value than men, and should not be given that special privilege as long as they shirk their responsibility to gestate our progeny. Also, fewer children are needed since we have made so many great advances in technology and medicine -- the mortality rate has plummeted so their isn't a great need for as many births as in the past, but we do need at least replacement levels, so we need to undo a little of the evil programming of the feminists if we wish to survive as a culture.
The men left behind is just the way things go and have always meant. Men have always been the cannon fodder, often against their will -- strange that the "oppressors" get treated the worse. What kind of idiot could ever take the lies of the feminists seriously?