Is it weird that I have been so abused mentally that I feel the happiest I have ever been in my whole life?

I would recommend therapy. You say you've been through a traumatic event, and that's reason enough to undertake some counseling sessions. What you're feeling, I don't think it's normal. I'm not saying it's not common, I just don't think it's normal. From what you are saying it seems like you feel invincible. You're definitely right not caring what others think. That's good. However, feeling invincible is dangerous. What I think you're doing is trying to block out the fact that you have been abused. I know that you are acknowledging the fact that you are abused but you aren't invincible. Get some help, it'll be healthy. Good luck! - Allie.