However, that makes me wonder why he didn't try to sell part of his collection since his finances were so tight that he had to move back in with his parents.
Follow up questions include whether he disclosed to his parents that he was moving such a large porn collection into his home, and if he didn't disclose that information how did his parents learn of the porn stash. Also, what responsibility do the parents have towards maintaining his property after he moved out. It certainly does not appear that the parents gave permission for his son to have the porn stash at home; therefore, it doesn't seem reasonable for the man to expect his parents to provide storage after he left. At some point the porn becomes abandoned property and the parents have every right to remove that property from their household since they find it offensive. If the porn collection is one of his prized possessions and since he had to have at least some clue that his parents wouldn't approve, then he should have rented storage space to keep his collection.
From a personal perspective, I already knew that if I had brought a stash of porn into my parent's house that my father would have tossed it immediately. I view bringing the porn stash into the house almost as disrespectful as bringing drugs or excessive amounts of liquor into the home.
I hope that the parents presented their son with an invoice for services rendered while he lived at home.