(I forgot to put this in the game, but use F11 to Fullscreen)

Humanity abandoned you.

Machines quarrel amongst themselves over resources.

There is no goal to fight for.

Your mission is only to survive.

After all, there is no afterlife for the inanimate.

Credits (legal stuff): 

KNIFE CRAYONS by Gigakoops, source: Free Music Archive, license type: CC BY-NC-SA.