I've been severely depressed before. When you look back later you realize you wasted part of your life doing nothing with yourself and regret it. I understand how you feel but force yourself to do something. I joined my schools cross country team even though I didn't want to, but knew that I've always loved running before my depression. I can say today that I'm glad I did it and I'm proud of myself even though it wasn't exactly fun at the time.
Think about it. If you keep this up for a year or two and start gaining motivation to live your life again wouldn't you regret that you wasted a year of your life neither growing as a person or learning anything new? It's comparable to the feeling of someone who's in a comma for 5 years and they wake up and everyone has moved on with their lives, finished college, have families, have a career, while you've realized 5 years have been taken from you that you can't get back.
I agree with beastie. If you've been like that for 3 years maybe you should think about seeing a therapist. Sometimes when you hear something from someone else, face to face, it hits home. This or something has to happen in your life that breaks the cycle or makes you hit rock bottom.
Think about it. If you keep this up for a year or two and start gaining motivation to live your life again wouldn't you regret that you wasted a year of your life neither growing as a person or learning anything new? It's comparable to the feeling of someone who's in a comma for 5 years and they wake up and everyone has moved on with their lives, finished college, have families, have a career, while you've realized 5 years have been taken from you that you can't get back.