I used to be a vicious little troll when I was younger
Uh oh, what kinds of things did you do that made you a little troll?
I don't know. Maybe I'm just a bad person to begin with.
The past is behind you now and it sounds like you realize that was wrong. It doesn't necessarily mean you're a bad person; it's just something you should apologize for and work on your behavior going forward.
Or, maybe I'll just keep saying and doing whatever I want. You sound like you're retarded.
I'm not sure why you are lashing out at me for trying to help you. I'm afraid that no one will ever help you if you keep acting so rudely, and that would be a shame. Maybe try being nice to people, and they'll treat you with kindness in return.