spotted a a news article about a guy in Japan who burned down his own home-- and reportedly attempted to burn himself as well, as he had doused himself with kerosene –because his mother had “gotten rid of his 'valuable' Gundam plastic models.”
These articles are always a bit tough to deal with because people think it makes otaku look more obsessive than they really are on average, or because people actually do come to think that otaku are that obsessive. It's pretty clear that this guy had issues well beyond mere otakudom (like, for example, why was this nearly-30-year-old man's mother getting rid of any of his stuff anyway?).
However, I can remember being very upset when my mother once got rid of a big stack of books (she felt they weren't up to my reading level). Fortunately, my mother is very understanding and she's loathe to get rid of even the smallest things without my giving the OK.
Have your parents ever gotten rid of something you didn't want them to?