Cleopatra is known to have used ergot, a medicinal herb causing uterine contractions. The population of France after the French Revolution decreased considerably due to a high use of simple contraception and abortion. In 1965 the Supreme Court expanded the right to privacy to protect the ability of married persons to use contraception. This protection was extended to unmarried persons in 1972. Since the advent of the 'Pill' in the 1960's, a host of fundamental ethical questions have arisen or been highlighted.
Moral analysis aims to consider issues through rational argument.
It is particularly difficult to make these assumptions when the topic is considered to be private, or rational reasoning is limited due to the emotion or fear of the topic. People should do good and avoid evil. Those things that people are naturally inclined to do are most likely good. Good ought to be pursued and evil avoided. Good ends are those towards which people are naturally inclined.