People said if we didn’t do anything, shit would get bad.
So lots of people did lots of stuff, and it wasn’t a big deal.
It’s natural human variation for some people to think it’s always not a big deal. We evolved for it to vary because that’s what helped the overall group survive.
Somebody has to be the first out the cave to see if the wolves are still out there. If we all left at the same time they’d rip everyone to shreds. It helps the group to have a couple idiots around to test if it’s safe.