1. They can actually leave Georgia!

2. There are other places with walls
3. They haven’t learned better than to split families into multiple cars
4. The Barksdale crew was unprepared for the zombie apocalypse
5. They’re all still pretty dumb about stuff
You know darn well that loud noises attract zombies, and yet your entire crew still only has a total of one crossbow and one sword and opts instead to shoot zombies. Are you not watching as Darryl and Michonne silently wipe out entire zombie hordes without inviting more zombie hordes? For crying out loud, at least find a silencer, man.