That our world might be overpopulated takes the attention of two main reactions: the absolute natalists, believing all life must live and birth control must end, and the misplaced restrictionists, not malthusian but misanthropic or blank slatist. Neither hits the nail needing hit but bangs around it wildly.

A century ago, it was a horror story to recall that Asia holds almost one billion men in total—today, India & China hold one billion each. Every year the East as a whole dumps greater misery onto the global scale, the mixing menagerie south of Texas festers, and then whatever is in Africa. Birthrate matters, not 'we have too few' or 'we have too many', rather, depending on who outweighs whom, we lose or gain value as a species.