1) Sometimes, we have to do what we have to do.
The fact is, if you’re in a zombie apocalypse, you don’t have that much choice in the matter, it’s basically “Survive or…don’t“. You were never given the choice if you wanted it to happen, it just happened, and now, you have to deal with it.
Sadly, this won’t be the only time you’re stuck with that in the apocalypse. In fact, on some level at the very least, I’m willing to bet there will be many times that you’re left with very little choice as to what to do.
Sadder still is that some of the times you do have a choice, it may not be a choice you want to make, but, a choice you have to make.
Look at Mary. She wanted to get a chance to watch her nephew grow up. She wanted a chance to be a part of his life.
That, however, was not the choice she was given. As she, Kelly, Alden, and Adam tried to escape a growing herd of walkers chasing them, she realized that she was left with two options: Spend a few fleeting hours with her nephew before the walkers ripped open their sanctuary and slaughtered them, or risk her life to ensure that Adam got a chance to live. She chose the latter.
This wasn’t intended to be a sacrifice, but, thanks to Beta, that’s what it wound up being, however, that’s just how things might be in a zombie apocalypse: Having to make a choice that’s ultimately fatal in order to ensure the life of someone you care about.
You can’t always do the things you want to do in a zombie apocalypse, but, sometimes, you have to do what you have to do to save somebody else.