How much I take the following for granted.
shelter from elements and more importantly bugs/animals/wildlife.
how hard it is to hunt with sticks, spears, traps (if you have the knowledge)
how knowledge of plants can ease the prospect of infection/pain.
how quickly your health can go down hill without clean water.
what it looks like when you don't get a proper caloric intake. They do a time lapse at the end of the show.
how fighting with your partner can make a bad scenario get worse. plus a lot more stuff I can't recall at the moment.