The more self-sufficient you can be, the fewer societal resources you will take up, which could then go to someone else in greater need. That’s my perspective at least.
But the more self-sufficient you are, the more resources of yourself you need to supply yourself. So you can provide less societal resources. If you do not need to provide clothes for yourself, you have more time caring for elderly, etc.
As another view, the total resources need does not directly change by changing who does what. The advantages of helping each other are in the OP. At some point however, I would think, the overhead of organization grows so large that it may not be worth it anymore. Just think of the amount of work put into “useless” administration in many countries. But in a 30 person village, this is probably negligible.
Edit: Thanks for helping other people on the feet!
That is a good point, but I would consider resources needed to maintain stability versus resources needed to achieve stability. Metaphorically, it’s easy to stand on top of a mountain, but it’s a lot harder to climb it from the bottom. And the mountain gets taller the longer you wait.
Once you’re at the top, you can lend a hand to the people still making the climb without worrying about being pulled back down.
