Here is a useful comment piece from Ed West, a commentator on the Daily Telegraph website.

West’s essential point is that, while the middle classes could ultimately afford the licence which was ushered in with the sexual revolution of the 1960s, those further down the social scale could not.

As West puts it: “The original Summer of Love, 1967, happened because the invention of the Pill gave people the impression that they had controlled fertility forever, when in fact its use (and that of all contraceptives) still requires discipline, care, health and luck. It’s that sort of luck the poor can’t afford to depend on. Too often the Summer of Love is followed by the spring of single parenthood.”