That doesn't also go against homosexuality. Just as there is no argument for homosexuals that also is for incest. Now granted I disagree with both, but think about it. "Just let them love who they want it doesn't affect you"
"It's their choice"
[spoiler]Food for thought[/spoiler]
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Homosexuality is sick behavior. Incest... at least humanity doesn't die out. If every human had sex with their parents and silblings, all humans would be retards and monstrosities but we would still be here. Also when my female cousin gives me those looks, breh I'm taking condoms. Everything's fine. [spoiler]I didn't sleep with her but the looks are real and I have fantasies of me and her making love.[/spoiler]