I do what people do when they're bored, they annoy. They look for conflict, something to challenge them. A bit naive, are we? I'm the part of you that you don't want to admit.
People hate emo's, they hate patheticness. They hate random bullshit that gives no meaning to their lives because they're afraid of meaninglessness, of emptiness. I play pathetic and senseless because it's something to do from the mundane, empty lives we lead. You can verbally debate if you like, but it's senseless. There will always be trolls and they'll always find something that irritates you. And by letting them irritate you, they win their little shot of dopamine to make them feel better.
tl;dr, we're all trolls.