Depending on the situation of course...

If you aren't moving around and have some sort of camp/base then people who may not be able to hunt/fish/build a camp fire can provide support in a lot of other aspects. Chopping wood, sewing clothes, preparing food, and stand watch at night for example. In the real world those little ankle bitter dogs aren't much use in a fight yet they can bark to sound the alarm.


Even the elite military units rely on team work. You can be the baddest mofo in the state with super ninja mountain skills but you have to sleep sometime. What if you are the one that slips or falls and breaks an ankle?

As mentioned trust is the biggest issue.