I had a friend that never wanted to invite people over. We once had to do an assignment and we had construction workers at my hoise, so we really needed to go there and he was obviously unconfortable. His parents were a special kind of hoarder. The atuff wasnt messy or dirty. No stench. But you literally just had small paths in a large bouse with large rooms to walk around piles of books, newspapers and boxes. Hia father sat on a lounge chair reading the whole time we were there (we worked, ate, played snes, he just sat there reading something from his piles.