Currently I'm going to go along with them, see if it was just a bit of hangover stupidity.
HOWEVER: the game is going to go through a period of robberies (it's a sword and sorcery setting) before the PCs find themselves in a Zombie apocalypse. They're going to be fighting some rather brutal zombies I've designed, and the game has starvation rules I'm imposing. They're already counting rations by the number of meals needed to stave off penalties and disease.
If they don't make allies, there will be other survivor groups out to rob them. They also won't have the heads up for resources they need to find so they can fortify themselves (lumber, etc.), or new spells (which aren't really sold for money).
also: I've started counting bad guys they slay, and keeping track of misdeeds. if it goes on too long I'm going to have them face a Christmas Carol scenario where the grim reaper comes to collect. They may have to fight every foe they've ever fought!
The setting is a bit Conan, though, and slavery is very much ancient roman style. I don't know that they're being too bad, either. It could just be that one moment, but I'll have to keep watching.
I prefer good guys, but I'm a social worker IRL, so social justice is kinda just how I think (so the world looks like Conan imho
). I want to watch this as it develops, see how the other side thinks.
I also need to be careful, as these are my wife and friends. It's trickier than smackdowns with high school kids you'll eventually leave and never see again.