You haven't been unfair nor have you been ungrateful. And yeah, you're stupid. That makes me short bus material.
Like it or not, you are loved. In fact, I'm hugging you right now. Oh you hate that, don't you?
I think you're a caretaker and this is very difficult for you, to not be able to do everything you do. But that doesn't change the whole point of you being on this earth...which is very important: to your family, and to your friends, and to all those who are offshoots of all those things you do. You are still taking care of stuff, and taking care of yourself is part of that.
Urgh, I can't say the right things. I hope you catch what I mean.