I too cannot wait for the day when NPC are implemented and this crazy homing zombie ability is removed from the game. I think we all (devs included, I think / hope) want a true experience where we can have those remote locations where only a few zombies exist, only venturing into the city and potentially tackling a horde, for a new axe or rare supplies. That is until a meandering horde / NPC driven/led happens to tear through our re-enforced fortress. I appreciate your point that the current system, while we understand the logic of its existence is very frustrating. One way to look at it, may be that in the interim we need to change our play style to a more nomadic lifestyle, never settling in one place too long (and hopefully avoid homing pigeon zombie hordes) Unfortunately it is this way for now, I think the development to this game shows that it is not the end result they are looking for. Let’s wait and see what happens when the NPCs come into play. Not much else to do in this early stage of the game's development.