Martin Kafka writes, "Sexual disorders once considered paraphilias (e.g., homosexuality) are now regarded as variants of normal sexuality." A 2012 literature study by clinical psychologist James Cantor, when comparing homosexuality with paraphilias, found that both share "the features of onset and course (both homosexuality and paraphilia being life-long), but they appear to differ on sex ratio, fraternal birth order, handedness, IQ and cognitive profile, and neuroanatomy".
The research then concluded that the data seemed to suggest paraphilias and homosexuality as two distinct categories, but regarded the conclusion as "quite tentative" given the current limited understanding of paraphilias.
By the mid-20th century, mental health practitioners began formalizing "deviant sexuality" classifications into categories.
Originally coded as 000-x63, homosexuality was the top of the classification list (Code 302.0) until the American Psychiatric Association removed homosexuality from the DSM in 1974.
Many hotels shy away from the obvious fact that some couples are using their rooms as their own little private dens of vice.