Historically, abstinence has probably been the single most important factor in preventing pregnancy. Women and men of all ages deliberately choose to abstain.
Abstinence is a normal, common, and acceptable alternative to sexual intercourse.
Although some use only sexual behavior to express their affection, sexual expression does not have to include intercourse. Most have a more expansive view of romance and find that pursuits other than intercourse give them pleasure and meaning. A walk with someone on the beach or watching a movie together are activities many find just as meaningful as sex. Human nature is such that sexual activity is intimately linked to one's emotional and psychological state. The ability to control one's sexual urges is part of human nature and also an important distinction between humans and animals.