there had been some doubt whether failure to practice family limitation has its origin in nonacceptance of the goal, ignorance or unavailability of the means, or the fact that the means are complex, difficult of operation, expensive, and uncertain.
Recent Indian experience, and the widespread practice of abortion in postwar Japan, even in rural districts, has shifted opinion away from the first of these possibilities.
There is still great desire for children in most societies, and opposition to birth control in many others.
But a growing awareness of the possibilities of increasing the level of living has heightened interest in limiting the number of children