"Homosexuality is assuredly no advantage, but it is nothing to be ashamed of, no vice, no degradation, it cannot be classified as an illness.”
Sigmund Freud 1935
Sexuality is a biological mean of reproduction. 5 years old can understand that but apparently you don't. And neither Freud ¯\_(ツ)_/¯
Anyone that masturbates would at the very least have to concede to being a pervert themselves first if reproduction is the only non-perverted sexual act:P (I may be a pervert, maybe).
