Stay with us, my friend. I often feel just like that and, while I have trouble finding meaning and purpose in life, I know that I want to stay so I can find something. I can't teach you anything since I can't seem to teach myself, but this might be something that will go away eventually. And you've seen the other posters' replies, we're here to help each other, so we're all important if only because of that. Hugs!