What does the scientific evidence show about homosexuality?
In 1973, the American Psychiatric Association removed homosexuality from its list of diagnostic disorders. In retrospect, this decision appears to have been inspired by political pressure rather than medical evidence.
Homosexuals of both sexes remain fourteen times more likely to attempt suicide than heterosexuals47 and 3½ times more likely to commit suicide successfully.48 Thirty years ago, this propensity toward suicide was attributed to social rejection, but the numbers have remained largely stable since then despite far greater public acceptance than existed in 1973. Study after study shows that male and female homosexuals have much higher rates of interpersonal maladjustment, depression, conduct disorder, childhood abuse (both sexual and violent), domestic violence, alcohol or drug abuse, anxiety, and dependency on psychiatric care than heterosexuals.49 Life expectancy of homosexual men was only forty-eight years before the AIDS virus came on the scene, and it is now down to thirty-eight.50 Only 2 percent of homosexual men live past age sixty-five.51
Male homosexuals are prone to cancer (especially anal cancer, which is almost unheard-of in male heterosexuals) and various sexually transmitted diseases, including urethritis, laryngitis, prostatitis, hepatitis A and B, syphilis, gonorrhea, chlamydia, herpes, and genital warts (which are caused by the human papilloma virus, which also causes genital cancers).52 Lesbians are at lower risk for STDs but at high risk for breast cancer.53 Homosexuals of both sexes have high rates of drug abuse, including cocaine, marijuana, LSD and other psychedelics, barbiturates, and amyl nitrate.54
Male homosexuals are particularly prone to develop sexually transmitted diseases, in part because of the high degree of promiscuity displayed by male homosexuals. One study in San Francisco showed that 43 percent of male homosexuals had had more than 500 sexual partners.55 Seventy-nine percent of their sexual partners were strangers. Only 3 percent had had fewer than ten sexual partners.56 The nature of sodomy contributes to the problem among male homosexuals. The rectum is not designed for sex. It is very fragile. Indeed, its fragility and tendency to tear and bleed is one factor making anal sex such an efficient means of transmitting the AIDS and hepatitis viruses.
Lesbians, in contrast, are less promiscuous than male homosexuals but more promiscuous than heterosexual women: One large study found that 42 percent of lesbians had more than ten sexual partners.57 A substantial percentage of them were strangers. Lesbians share male homosexuals' propensity for drug abuse, psychiatric disorder, and suicide.58
The statistics speak for themselves: If homosexuals of either gender are finding satisfaction, why the search for sex with a disproportionately high number of strangers? In view of the evidence, homosexuals will not succeed at establishing exclusive relationships. Promiscuity is a hard habit for anyone to break, straight or homosexual. Promiscuous heterosexuals often fail to learn fidelity; male homosexuals are far more promiscuous than heterosexual males, and therefore far more likely to fail. Lesbians are more promiscuous than heterosexual women. There is little good data on the stability of lesbian relationships, but it is reasonable to speculate that their higher rates of promiscuity and various deep-seated psychological problems would predispose them to long-term relational instability. Existing evidence supports this speculation.59
The more radical homosexual activists flaunt their promiscuity, using it as a weapon against what they call "bourgeois respectability."60 But even more conservative advocates of gay marriage such as New Republic editor Andrew Sullivan admit that for them, "fidelity" does not mean complete monogamy, but just somewhat restrained promiscuity.61 In other words, they admit that exclusiveness will not happen. And without exclusiveness, their "marriages" will have little meaning.
http://www.catholic.com/library/gay_marriage.asp
