What if I just disappeared from the face of the Earth?
Why do you want to disappear?
People might like me more if I disappear.
It sounds like you are having feelings of depression. Feelings like this can be harmful and do a lot of lasting damage. Have you considered talking to a therapist, doctor or loved one?
You don't understand, I'm an introvert and I can't talk to people.
That's no reason to disappear. Lot's of people are introverts. Therapy can help you deal with feelings of isolation and anxiety; you'll feel a lot better if you talk to someone.