Basically what you have here is a self professed person who has dropped out of society. Like many homeless people it gets tiring being out on the limb so they find themselves a reason to get arrested, as he so easily done in this case. It a reprieve from the streets. A temporary respite from the everyday struggles to survive in the outskirts of society. He'll take a few hot showers, get some hot meals, clean duds, get some rest before the doors open again and he moves forth finding another cause that eventually will foster another respite.