Homosexuality is a disease and people who practice it need shrinks to knock some senses into their heads. According to the Catholic Church, sexual intimacy between a man and a woman is the normal method of male and female bonding (emotionally and physically) because it corresponds to the design of our bodies and because it is the normal means by which offspring are created.
If God had intended the human race to be fulfilled with both heterosexual and homosexual marriages, He would have designed our bodies to allow reproduction through both means and made both means of sexual intercourse healthy and natural. Homosexual anal intercourse carries a high risk of disease, which is recognized in the Holy Scriptures, where gay men are said to receive in their bodies the due penalty for their sin. The body is the temple of the Holy Spirit and one must not misuse it for any wrong purpose.
(The views expressed by the author in the article are his/her own.)