my parents had a BS for a few years when i was 16ish, i don't remember any severe problems, I liked not having to leave my house to go to a meeting, but it all ended one night after I had moved out. My parents kept my room exactly as when I lived there, which included 5 glass shelves mounted on the wall with my most delicate posessions, about 30 car models my dad and I built since I was 5, expertly done too I might add. A few ornaments and keepsakes from friends, a couple small trophies from school (ping pong champ and class clown) and a bunch of other easy breakables. One night after a book study some brat picked the lock to my room with a toothpick to look around, they remembered from when I lived home how cool my room was I guess, but anyways this kid was like 15 or so shoulda had better sense. The brat tried to scale my glass shelves to get my "death of superman" comic I had displayed there.
CRASH!!!!! All 5 shelves come down and everything on it now fits in a 2ft sq box. My dad came down and freaked and I mean FREAKED, my dad can really lose his temper, he was screaming at both the kid and her mother (yeah a girl did this) they left in tears and apparantly went to the elders to bitch out my father, but I liked their response, "you deserved it" After that my dad killed the bookstudy.
On a side note the woman who's kid destroyed half of my childhood stuff gave me a really cheap snap-tite model that cost like $5 in compensation. and if any of you build models you know how great those are.
On another side note, my parents never told me about this till I came home again a year after it happened, where I re-freaked out at mother and daughter team, this time they brought me a half decent model and I rudely explained that (a) they destroyed probably $1000 worth of my stuff not to mention the time or sentmental value of it. and (b) you keep the model, shove it up your ass and stay the hell away from me.
And yes I still have the box of plastic broken models, my mother thinks I'm nuts but I still shovel through the parts and get some memories from them.