Well we got rid of one psychopath (the Governor) and now we seem to have another (Lizzie).
Besides them Carl murdered an unarmed kid & tried to kill Morgan; Carol murdered Karen & the other person; Rick left hitchhiker guy to die; Shane killed a prisoner & tried to murder his best friend Rick;and the entire population of Woodbury murdered people in Roman like circuses and ambushed soldiers. The only people with ANY moral compass were Dale & Herschel and they're both dead. Plus if they follow the comic books we have another homicidal maniac in the near future! I really don't care about these characters anymore, if they live or die. They're no more human than the walkers. Maybe that's the writers point.