You kill or you die, or you die and you kill.
Have you ever had to kill people because they had already killed your friends and were coming for you next? Have you ever done things that made you feel afraid of yourself afterward? Have you ever been covered in so much blood that you didn’t know if it was yours or walkers’ or your friends’? Huh? Then you don’t know.
If you want to live, you have to become strong.