Kevin (continued)
that if they cannot remain chaste before marriage, how do they expect they can deal with chastity during their marriage. She told them to see their parents' situation for many years as a prime example and also said to them that there will be times during marriage to abstain from sexual intercourse (sometimes by choice, sometimes due to health reasons) and that learning discipline and offering up our chastity to God before marriage will help them during their married lives. 

Kevin, many Catholics do not realize that marriage is a very serious bond/commitment that should not be approached lightly. One of the reasons many have been granted annulments indeed. Priests / pre-cana must be honest and prepare engaged couples for the lifetime commitment they are about to enter! These pre-cana courses have to include abstinence from sexual intercourse when a woman is fertile (be straightforward about the sin of contraception), about using one another as objects, (continued)