From the comments here, it seems people have not studied any philosophy and are treating these folks as selfish and thieving. Not so; as a living organism you need the minimum to feed, clothe and house yourself. This can be done in any manner (in ancient history Sages/Monks used to "beg" for food which was an accepted norm) and it simply is that some ways are looked down upon in today's society. Nothing more. For some more accounts on solitary living and solitude see;
1) Read up on Dick Proenneke - https://en.wikipedia.org/wiki/Richard_Proenneke He lived alone for 30 years (from age 50 to 80) in the Alaskan Wilderness; built his cabin by hand and filmed his activities. Those documentaries and journals are a must watch/read.
2) Into Great Silence - https://en.wikipedia.org/wiki/Into_Great_Silence A beautiful documentary on Carthusian monks in the French Alps.