Well...these past 2 years I have been doing alot of travelling all across the United States and even though some places are worse than others...I can tell you that I have encountered a number of Zombies walking the streets in high numbers. I mean seriously they are literally Zombies this is not just in my head. They stay up for weeks at a time with no rest...eat raw dead rats...and have rotten flesh and teeth.
They are called Meth Heads.
It is quite amazing how long the human body can survive on it's own even with no food or water...the body will literally start eating itself in order to get it's nutrients.
So even though the Apocalypse has not happened yet...don't think there are not already Zombies walking around somewhere out there.
...and yes regardless of what is going on in my surroundings I would still have to find a cave or something to hide in in order to get my video game fix on to take my mind off of the Hell that would be happening in the World around me
(I doubt I would stay in my home if I wanted to survive...I would venture off into the world much like Denzel Washington's character in "the Book of Eli")