if they want to punish him why not just kick him out? he will die at some point outside an...

I think that's a way to teach the others also to follow the rules.

yea ik they obviously did that to set an example, but kicking him out would get the message across just fine. being that cruel would just instill fear in ppl and that would make it easy to manipulate them. that's exactly what they're trying to do, not "teach ppl a lesson"

If guwon kick him out, there is a chance of survival and he can tell other people about the place and they can swarm the place.

there is a lot of different ways to administer punishment i just gave one example, ofc kicking out might not work out, if their only choice is to kill him they could have poison him, or drown him, and so many other ways
i just can't justify their way of things it's too cruel for me

Sure, but now he's cultivated a society that actually WANTS the bloodshed. Those people weren't reluctant in sentencing a concerned, struggling father to death. It took them less than a second to come to the unanimous decision KNOWING it would be a gruesome, inhumane public execution.

It's a sport for them atp, not a punishment.

And I do hope teach is actually a psychopath and just doesn't remember due to head trauma. He needs to be the one to show these people that they aren't at the top of the food chain. If and when it does happen I'll be over here giving a standing ovation Actual Cannibal Shia LeBouef style lol

Brutally killing them in stills fear amongst the ppl. Kicking them out could cause resentment making them want to get revenge if they ever survived.

yes i know why theyre doing that, im not asking for their reason of doing things, what im asking is how can u, a person, do that to another person? even if it's an apocalypse, with how things are, at some point they would be killing each other off til no everyone's dead. what's the point in living like that?