Comment by slothtrop

The one I'm living.

> Spend a day endlessly walking (roaming)

We can already do that at leisure, but most would not care to go a whole day (let alone every day) trudging around by necessity.

> searching in the forest for berries, mushrooms etc

You seem to be framing the search for food as a low-stakes endeavor.

> doing hand-to-hand combat

Between tribes (or even within your own), it can easily be more fatal than that.

Not only are you worried about calories, you're also concerned about not being outright murdered.