Homosexuality is objectively immoral because it is a self-destructive behavior.
It is self-destructive because anal sex is unhealthy due to the fact that the anal tears caused by penetration are infected by the fecal matters of the receiver of the penis. This contamination of the blood stream causes a plethora of diseases.
The same is also true for oral sex, which has now been shown to cause mouth cancer in rates exceeding tobacco. Plus, the tears of the penis caused by the teeth can also result in infection to the receiver of oral sex.
Masturbation is the most healthy of the sexual practices of homosexual, but it is not completely safe since hands are one of dirtiest places on the body which can cause infection to the penis. Also, masturbation is often accompanied by the other sexual acts mentioned bellow. The only way for homosexuality to be acceptable would be for the homos to solely engage in mutual masturbation after having decontaminated the body parts involved (hands, penis).
Homosexuals account for a disproportionate number of hepatitis cases: 70-80% in San Francisco, 29% in Denver, 66% in New York City, 56% in Toronto, 42% in Montreal, and 26% in Melbourne.
37% of homosexuals engage in sadomasochism, which accounts for many accidental deaths. In San Francisco, classes were held to teach homosexuals how to not kill their partners during sadomasochism.
41% of homosexuals say they have had sex with strangers in public restrooms, 60% say they have had sex with strangers in bathhouses, and 64% of these encounters have involved the use of illegal drugs.
Depending on the city, 39-59% of homosexuals are infected with intestinal parasites like worms, flukes and amoebae, which is common in filthy third world countries.
The median age of death of homosexuals is 42 (only 9% live past age 65). This drops to 39 if the cause of death is AIDS. The median age of death of a married heterosexual man is 75.
This is why homosexuality is for the most part objectively immoral.