'According to Freud, the full and uninhibited satisfaction of all instinctual desires would create mental health and happiness. But the obvious clinical facts demonstrate that men - and women - who devote their lives to unrestricted sexual satisfaction do not attain happiness, and very often suffer from severe neurotic conflicts or symptoms. The complete satisfaction of all instinctual needs is not only not a basis for happiness, it does not even guarantee sanity. Yet Freud's idea could only have become popular in the period after the First World War because of the changes which had occurred in the spirit of capitalism, from the emphasis on saving to that on spending, from self-frustration as a means for economic success to consumption as the basis for an ever-widening market, and as the main satisfaction for the anxious, automatised individual. Not to postpone the satisfaction of any desire became the main tendency in the sphere of sex as well as in that of all material consumption.'
Erich Fromm, The Art of Loving, p. 72.