Who said, ' It's not good to keep things in ' ?
While it may be true for creativity or feelings of love and gratitude, there are a lot of things that are probably better left unsaid, unexpressed and definitely unvented.
Necessity is often the mother of unventing.
Anyway, building a dry stone enclosure is a good way of seeing to it that things are 'contained', a way of keeping your cool and not just throwing things around and getting angry.
It's satisfying to have a place to go back to and say, 'This is kind of a neat cozy place to hang out, and yes, we built this instead of wasting our time getting upset and complaining about what others did or didn't do!