Hey! Not all of us are people who go to school in some way shape or form. I mean look here http://www.esrb.org/about/video-game-industry-statistics.aspx
Under the age of 18 is the minority here. 
(yeah doesn’t include pc, but I’m going to assume the figures are the about same.)
@isaacvithurston But first they’d need to restrict the amount of zombies per map 
On PC the average age is even higher since alot of younger humans have their parents buy them consoles (cheaper).