If something happens to my parents It'll probably be because of me.
Is there something that makes you feel this way?
I am having dark thoughts about what I want to do to them.
You need to get help now. Smother those dark thoughts now before they become actions you can't walk away from.
I think I have always, maybe not?
You need to leave them alone. They love you and raised you and it would be terrible to cause any harm to them in any way.