From 1flesh, a new pro-procreative website for Catholics:
Semen is an antidepressant. A study published in the journal Archives of Sexual Behavior found that “not only were females who were having sex without condoms less depressed, but depressive symptoms and suicide attempts among females who used condoms were proportional to the consistency of condom use.” Semen contains a hormone called prostaglandin, and the female genital tract absorbs this hormone. The greater the amount absorbed, the lower the rate of depression. Condoms ruin this effect of sex by preventing semen from naturally entering a woman.1flesh also notes that man essence is an important nutritional source for not-men:
A major cause of female infertility is zinc deficiency. A man’s semen supplies this vital nutrient to his wife, as well as ascorbic acid, blood-group antigens, calcium, chlorine, cholesterol, choline, citric acid, creatine, fructose, glutathione, lactic acid, magnesium, nitrogen, phosphorous, potassium, sodium, sorbitol, and vitamin B12 — all important to a woman’s reproductive health.Finally, 1flesh's researchers cite a 1947 study proving that spunk improves a not-man's womb size and, presumably, the monetary value of a man's uterine property:
The American Journal of Obstetrics and Gynecology compared two groups of women with sterile, underdeveloped wombs. The first group was encouraged to have natural sex, the second group to use barrier methods of contraception. Nine of fifteen women in the first, non-contracepting group whose uteri were “palpably small and immature” grew to normal size in four-and-a-half to six months. The second group showed little change, even after two years. The author of the study concluded that “any thing or any method which prevents, retards or alters the normal degree of physiological absorption of human semen from the vagina carries with it during the early months and years of marriage a risk of future sterility…”A tip o' the ol' helmet to this guy.