[5] The original view was a universalizing one, whereas the ideas about homosexuality being a fixed sexual preference developed in the second half of the nineteenth century, proposed independently by gay activist Karl Heinrich Ulrichs, French psychiatrist Claude-François Michéa, and German physician Johann Ludwig Casper.
[6][7] In the early twentieth century, German sexual science showed that many adolescent boys practiced homosexual behaviors (such as kisses, hugs, caresses, and mutual masturbation) for a few years; healthy development was considered to consist of abandoning them when they were older.
[11] The SS newspaper Das Schwarze Korps argued that forty thousand homosexuals were capable of "poisoning" two million men if left to roam free.
Because of the all-male organizations for boys and young men, such as the Hitler Youth, SA, and SS, the Nazis were afraid that homosexuality would spread rapidly in the absence of a harsh crackdown.
[13] A 2018 study in the United States found that exposing participants to scientific information about the causes of homosexuality did not change support for LGBT rights.
The court, therefore, found that the different age of consent for male homosexual relationships was discriminatory and violated the applicant's human rights.