Selling your house, quitting your job, not knowing where your next income is coming from or how much it will be? Not knowing if you'll ever be able to afford another house? Worrying about what would happen if you got ill? Or your van broke down in the middle of nowhere? Or where you'd sleep if your van was in the garage being fixed? Or what you'd do if your van got written off or stolen or impounded if you parked for too long somewhere? Or where you'd send your kids regarding schooling? Or how to communicate in a language you don't understand when abroad if something went wrong? Or how to explain away the x year gap on your CV if you needed to work again? Or where you'd go for a shower during a pandemic lockdown? The list of risks is endless.
At least prehistoric man knew how to hunt, make fire etc. Modern man? Would any of us honestly know how to catch a wild animal and cook it properly? Or forage for food in the forest in an emergency?
Of course, it's all relative but I don't there's any significant difference at all to be honest.