How did you reach those realizations so early in life? I urge you to reevaluate because I have been there in my past. I felt like no one cared, I was worthless, and I was all alone. Heck there are days I still feel that way, but I discovered as I got older that my value wasn't dependent on what some person sees in me. I started doing things to make me feel better about myself, like going to the gym and volunteering in places to help others. It was mundane at first, but eventually seeing smiles on the faces of little kids, and realizing I help put them there,made me feel better. I kept going and eventually I realized my thoughts were wrong and that I would make a difference, not just for others, but myself. I'm sorry you are having these thoughts. Hang in there.