Following Dale's preview of I Am Alive, this short trailer should help you to visualize the depressing, stressful life that occurs after an apocalyptic event. Everything looks so dusty. As the guy who can't stand dirty dishes in the sink, I wouldn't last a day.
The video also reiterates the importance of traversing a destroyed city, keeping essential supplies around until they're most needed, and managing stamina. The many years of playing videogames should have us well trained for that last part.