Originally Posted by Robert A. Heinlein

"All societies are based on rules to protect pregnant women and young
children. All else is surplusage, excrescence, adornment, luxury, or folly,
which can - and must - be dumped in emergency to preserve this prime
function. As racial survival is the only universal morality, no other basic
is possible. Attempts to formulate a "perfect society" on any foundation
other than "Women and children first!" is not only witless, it is
automatically genocidal. Nevertheless, starry-eyed idealists (all of them
male) have tried endlessly - and no doubt will keep on trying."