Genuine or not, you're still getting godtrolled. How do you think people begin to believe a load of bullshit like that in the first place? You are responding in seriousness to someone posting about religion. Whether they are just trolling or really think you are an abomination and will burn in hell, you're not gonna win.
Yeah, it's kind of like trying to teach a cat to fold blankets. It doesn't work, and it annoys the cat.