From an evolutionary standpoint, gay people make up only about 10% of the population, not exactly enough to create a human shortage crisis.
From a "being a decent human being" standpoint, basically you want to deny them rights because you judge them to be genetically inferior to yourself? There was a man named Adolph Hitler who had that same philosophy.
This reminds me of the John Green quote from Paper Towns:
“Did you know that for pretty much the entire history of the human species, the average life span was less than thirty years? You could count on ten years or so of real adulthood, right? There was no planning for retirement, There was no planning for a career. There was no planning. No time for plannning. No time for a future. But then the life spans started getting longer, and people started having more and more future. And now life has become the future. Every moment of your life is lived for the future--you go to high school so you can go to college so you can get a good job so you can get a nice house so you can afford to send your kids to college so they can get a good job so they can get a nice house so they can afford to send their kids to college."
That's an asshole move... just ignore them, this obnoxious chick took my seat the other day and I just pretended I didn't mind and sat excluded from all my friends, while she sat there in the middle of all my friends just basking at the joy of making me angry... little did she know, I was waiting in her house with a bat and a shovel, waiting to kill her and chop her body up with the shovel and feed it to her cats.
I call and raise you an awkward death. I mean, what was with the exploding people? Since when has the killing curse done that? I loved, loved, loved Sirius' death in OotP (despite my liking of the character) because it was so sudden and real and made you stop in your tracks and think, "Oh my god. Did he really just die!?" Bellatrix was all like, "I'm gonna go all confetti on your ass for that. Mmm, hmm!" And voldemort was just kinda like, "They told me I could be anything, so I became paper! Watch me fly awaaaaaay!"
Anyway, that was my rant. It's over now.
"If you're from Africa, why are you are white?"
I expected all the comments to be really serious, about sex and marriage, but nope, they're about peanuts x)
Looks like someone woke up in the morning feeling like P. Diddy....
Hogwarts: I WHIP MY STAIRS BACK AND FORTH I WHIP MY STAIRS BACK AND FORTH
I know. It's like "Ok, I want peace on earth." "Great, in order for your wish to come true a giant capybara must come and eat south America" and you're like "lolwut?"
Well, judging from the relatively low rate of homosexuality, it would most likely be a recessive trait and recessive traits have a tendency to skip generations. But that's assuming the absolute simplest possible method of inheritance (which is unlikely considering just how rare homosexuality is). It's more than likely a trait that's controlled by linked genes or polygenic inheritence. But that's a little more complicated.
That being said, it's highly unlikely that it's completely genetic or completely based on prenatal conditions.This is because there are cases of identical twins where one was homosexual and the other was not. Environmental factors are at play as well.
But in response to the OP, studies have found that people are more likely to be homosexual if one of their biological siblings was also homosexual, meaning that homosexuality is definitely and without a doubt influenced by genetics