Virgins Divorce Less. When a man is married as a virgin, his divorce rate is 63 percent lower than a non-virgin. For women, it’s 76 percent lower. 
Women who have engaged in sex with only their husbands are four times less likely to have an abortion than women who have more non-marital sexual partners. Women who have had five non-marital sexual partners are four times more likely to have abortions than are women who have engaged in sex only with their husbands.
CHASTITY= GREATER FIDELITY
The more promiscuous you are before marriage, the more likely you are to commit adultery after marriage. (The sexually self-indulgent have had no practice in self-restraint.)
CHASTITY=BETTER SEXUAL SATISFACTION IN MARRIAGE
Couples who don’t sleep together before marriage and who are faithful during marriage “are more satisfied with their current sex life and also with their marriages compared to those who were involved sexually before marriage.”
Sex within your marriage leads to greater personal happiness than sex with non-marital partners. The greater the number of non-marital sex partners, the higher the probability of depression. Only 2.8 percent of women who have had sex only with men they married report they currently feel “not very happy” or “very unhappy.” By contrast, 8.3 percent of women with 16 to 20 non-marital sex partners report they currently feel “not very happy” or “very unhappy.”
CHASTITY = EDUCATIONAL & SOCIAL SUCCESS
Teen childbearing is associated with reduced educational attainment. Teen mothers are substantially less likely than women who delay childbearing to complete high school or obtain a GED by age 22 (66% vs. 94%). Fewer than 2% of teens who have a baby before age 18 attain a college degree by age 30.
CHASTITY = THE BEST BIRTH CONTROL
Contraceptives such as the Birth Control Pill and Condoms have high failure rates in preventing pregnancy. 54 percent of women who have abortions had used a contraceptive method during the month they became pregnant.
Almost 750,000 girls aged 15–19 become pregnant each year in America. 80% of them are unplanned pregnancies. 
 Edward O. Laumann, et al., The Social Organization of Sexuality: Sexual Practices in the United States (Chicago: University of Chicago Press, 1994), 503.
 The Center for Disease Control, National Center for Health Statistics, National Survey of Family Growth, 1995. Also, Rector, Robert E., Kirk A. Johnson, Ph.D., Harry and Jeanette Weinberg, Lauren R. Noyes, Shannan Martin. ”The Harmful Effects of Early SexualActivity and Multiple Sexual Partners Among Women: A Book of Charts,” The Heritage Foundation, June 23, 2003.
 Mike McManus, a Christian newspaper columnist and author of Marriage Savers: Helping Your Friends and Family Avoid Divorce.
 National Institutes of Health researcher David Larson and “The Hottest Valentines: the Startling Secret of What Makes You a High-Voltage Lover,” by William R. Mattox Jr., The Washington Post, Feb. 13, 1994.
 27. Perper K, Peterson K and Manlove J, Diploma attachment among teen mothers, Fact Sheet, Washington, DC: Child Trends, 2010,<http://www.childtrends.org/Files/Child_Trends-2010_01_22_FS_DiplomaAttainment.pdf>, accessed Mar.1, 2010.
28. Hoffman SD, By the Numbers: The Public Costs of Adolescent Childbearing, Washington, DC: National Campaign to Prevent Teen Pregnancy, 2006.
 Guttmacher study.
 Kost K, Henshaw S and Carlin L, U.S. Teenage Pregnancies, Births and Abortions: National and State Trends and Trends by Race and Ethnicity, 2010, >http://www.guttmacher.org/pubs/USTPtrends.pdf<, accessed Jan. 26, 2010.