When asked “Why are humans created this way that they are very vulnerable from behind?” Adam Wu responds:
The human has a SUPER EFFECTIVE adaption for protecting their rear. One so powerful that when properly deployed it makes humans one of the least vulnerable creatures on the planet to being attacked from behind.
It [sic] layman’s terms, it is known as “a buddy watching your six”.
Take away that adaptation by forcing the human to be alone, and you’ve nerfed the poor thing.
Calling him “vulnerable from behind” in this context is about as fair as claiming that a de-fanged a sabertooth cat was “created” with a weak bite, or that a de-finned Megalodon was “created” to be a poor swimmer.
Adam Wu

Important, particularly in the independence-is-best western culture. Another quote comes to mind:
…they’re sharing a drink they call loneliness
But it’s better than drinkin’ aloneBilly Joel
We need each other. Maybe un-obviously, being our best selves allows us to be what we can be in support of each other’s journeys. And journeying together can help us be our best selves.
We’re all just walking each other home.
Ram Dass