There is way too much weaponry and ammo!
My experience after 230+ hours of game play is that a player wants to get a gun/rifle asap, even I as a non-KOSer.
I mean, if in a zombie <i><b>survival</b></i> game, the <i>survival</i> aspect gets so subsidiary, because you have to beware all those people, who seem to confuse DayZ with CoD, where's the survival then? What's different between DayZ and Wasteland (ArmA Mod) except for the zombies?
The creators actually said themselves that though weapons wouldn't be that hard to find, ammo would be really rare. Well, when I find an ammo box, it doesn't take a few hours until it was filled with 5.56 and 7.62 rounds.
If finding a weapon or ammo would be sort of an "OMG moment" and if players would find only 10 or 20 bullets within a whole day, they would care about it and would probably not KOS (so much) just for fun.
Johnny