I had a nightmare about the world turning into a zombie apocalypse and then woke up. It was that bad.
After I was awake I got worried, about the safest place, food and protection. What the hell, I haven't been watching The Walking Dead or playing it for a while, but it still got me.
It's true that the weakest may be bitten by them, but keeping him/her close to you would make it less likely for it to happen, plus if your love one dies and the world's a complete disaster it'd be either live alone or die with him/her.
Hopefully a Zombie Apocalypse never ever happens.