Nowhere to go, nothing to do

I just sit in a room and stare at a screen all day. There is nowhere for me to go and nothing for me to do. When I go out I just aimlessly wonder about, feeling completely out of place and that I shouldn't be there, and just end up going back home again. What is the point. I don't enjoy anything anymore and feel sad everyday. Just want to end it all but its not possible. Its all so damn pointless, everything and why the hell is the world so populated when life is so damn awful.