Yep, it is sad and yes, I do think there is some depression involved; having lost two wives to cancer. He can be cantankerous and has probably alienated some of the villagers but then he probably could not be described as a people person either.
I am not judging him if that is how he wants to live, but as I live here now also, I have to think of my well being too and while I will not mess with his 'clutter', I am not going to tolerate fleas, dirt, grime and general unhealthiness.
Aww sorry, thays sad

And you shouldn't have to either! That's unsafe!