Everyone dying at the end would be horrible. A running theme has been the positivity and support that everyone has for each other and it would just kill the whole story and make it pretty much like every other zombie story in existence. I'm even surprised at how dark season 3 has gotten - yikes, tens of thousands dead!?

The cracks in the ground still need to be dealt with and explained, the 'families' subplot needs resolution, Ink needs resolution and there is no doubt in my mind that all of this will be addressed and resolved by the end of season 4