Aradiane
To be honest, you kinda sound like the people who see gay characters in books and movies and go "THEY SHOULDN'T BE GAY THERE ISN'T A ~REASON~ FOR THEM TO BE GAY".
And you do realise a lot of LGBT people make 'headcannons' due to the fact that movies, comics, etc are so heterofocused, and there are barely anybody who represents them?
Also, gtfo of here with your demonization of people who actually find drawn porn to be nice. Gasp, people actually LIKE DIFFERENT THINGS TO ME?! OUTRAGE! And you do realize people often do have human interaction as well as liking cartoon porn, right?
To be fair to xx I met my fate xx, I think it sounds like someone who has hung around in some very yaoi heavy fandoms. While I do agree a lot of LGBT make "head cannons" the truth is a lot of people who make yaoi head cannons in a lot of other fandoms are straight.
I kid you not, depending on which fandom you're talking about, they can be nearly all straight, and some of them, they bash the female characters like not tomorrow. It doesn't matter who the character is, they can be too bitchy, too weak, to stupid, too naive, too something. It gets really irritating after a while, even if your own head cannon are a few guy pairings just for the character clashes.
However, I will say I disagree with xx I met my fate xx's opinion about cartoon porn. To me it is really no different than reading a smutty romantic novel, or watching porn. It's just, people might prefer seeing or even drawing porn as oppose to reading a smutty romantic novel or watching live action porn.
I'll also say, interestingly enough, that not all cartoons depicting an adult scene is meant to titillate. This kind of falls into the weird fandom thing, in which it's something you might want to see but not necessary for the purpose of titillation. I can't really describe it all that well, but just trust me when I say, not all pictures depicting a sexual act is necessarily for arousal.