Because sometimes, you just need to wall off the world.
Stonewalling is the art of erecting an impenetrable barrier between yourself and the rest of the world. It's like building a wall, but with more angst and less actual wall-building.
Maybe you're just feeling overwhelmed, or maybe you've had a few too many existential crises. Whatever the reason, stonewalling is the perfect solution to all your problems.
Stonewalling in the Woods, Stonewalling as a Form of Protest