Is my life pointless and worthless? I'm very sad.?

You sound very depressed. If you have felt this way for long, you should see a doctor. Depression is evil and will drag you down further than you ever thought possible. People make poor decisions when depressed so it is best to get it under control as soon as possible. Even if you don't believe in taking medicine to help balance you out, a doctor might be able to give you some suggestions on how to improve positive thinking or might suggest something herbal that will help increase dopamine (spelling?). Hope this helps. Don't give up hope. Life is a gift - treat it that way.