Sadly, I have historically been a huge Walking Dead fan, but I admit that I haven't watched a single episode this season.
I get that when there are shows like this we have to suspend belief to a certain point, walking dead people and all, but there does come a point between apocalypse fiction and fantasy. At this stage in the game there would be no more cars as all of the fuel would have either gone bad or been used up. Horses or something similar would be the main/only means of easier transportation. Regular sickness and disease would start killing some people. Non-zombie inflicted wounds never get infected. There are still fat people around. Come on! They are limited to what, 1000-2000 calories per day at most, and they walk everywhere and work constantly but still look like me? I don't think so. Bullets bouncing off sheet metal?
Half-life of a zombie? They did start making them look aged a bit Ill give them that...but we all know what happens to meat when its left in the freezer for too long...it gets destroyed! One or two good winters and there would be no "old" zombies. Sure, you may have a smattering of new ones from the recent dead, but not the three year old rotting corpses.
I want to love the show again...back when it was a constant race from one safe spot to the next. A small group of desperate survivors trying to survive. Not "As the World Turns" with guns.