As Thomas Sowell says, "Each new generation born is in effect an invasion of civilization by little barbarians, who must be civilized before it is too late." My experience as a parent has only affirmed this sentiment.
It's easier to remain unaccountable for predictions if you'll be dead by the time they are falsified. Or, at minimum, after a lucrative book deal has paid out. See also: Paul Ehrlich.
Also: a hundred a month! Where do they find the time?!