Correction: All points I stated were already confirmed by scientists before I stated them in my comment, and that was even the reason why I stated them, but you refuse to recognize these facts, because they don't suit your convictions, but that is your fault and not mine. Words as "abnormalities" do not exist in science, as they are subjective. And the behavior I stated about raping males to keep them away from females... I've seen this among dogs already, and as a matter of fact raping males simply with humiliation in mind and not true sexual attraction is even found among humans. Not up to your biology, are you?
Homosexuality is actually as old as mankind, in fact, it's as old as genders in general exist. It became "abnormal" simply because some preachers began to deem it so and it became a religious phenomenon. Then again, sex in general was seen as an impurity, we can see this in Mary mother of Christ being depicted as a virgin, despite giving birth to Jesus and priests and monks having to swear a celibate. Now it was kind of "tolerated" as it had to be done to bring forth offspring. And well prostitutes earned a lot due to these taboos too, showing it was all hypocrite from the start.
And if you want to deem homosexuality as an "impairment" or "disease", you are already acknowledging the fact that homosexuality is a natural thing, as impairments and diseases are also a natural thing. And I don't know why you bring up porn, as that was totally not on topic here.
First of all, once you judge people for being either "normal", "abnormal", you are already technically disqualified to judge your fellow men at all! That is actually an irrefutable fact you cannot disagree on... You can only refuse to acknowledge it, and if you do, I feel sorry for you, and then I'll recommend a good psychiatrist! A REALLY DAMN GOOD PSYCHIATRIST! Everything is normal and everything is crazy, when it comes to psychology.
Fearing things (you do, admit it. If you don't I know you are lying as you've already proven that in your previous post) does not mean they are not normal. If I'd be swimming in the sea and a hungry sharks swims to me, I'll also be overcome with fear. That doesn't make that shark abnormal.
In the many years I've been confronted with myself and other people's behavior, I've learned one thing. And that is not to have respect for people who deem other people either "normal" or "abnormal".... Those words are merely a nice way to create a "we" and "they"...