I've got 3 stories: one from me and 2 from the gf. (Luckily I was able to repair all 3 and none would even know unless told about it)
Me: I
used to have my Anakin Skywalker PF on a lovely wall shelf made by the very talented
Cocoboloboy. The shelf was right underneath an outlet that I rarely use and between my 2 main detolf cases w/ the show case figures if you will. However, one day I bent down to plug in my charger for my phone and (mind you I'm an athletic build 6'4") when I came up, bumped my head on the shelf and down came Anakin! Leg with lightsaber wiring in it broken off and all fingers but the thumb on the force hand broken. Luckily I was able to fix both and it's good as new. No one ever knows until I tell them this story. Learned my lesson and now my PFs are on mid height bookshelves.
GF: Broke the rose off the DCC Poison Ivy Covergirl statue as well as cracked the hair. Nothing some glue (for the rose), epoxy putty (for the cracked hair) and paint wouldn't fix
GF: Were at the LCS where she worked and she just got it in that day. Opened it up and showed it off and put it back in the box. But, when putting it back, she didn't secure all the pieces in their spots. So, when a friend came in, she wanted to show it to them, as soon as she opened it again, pieces just started falling out. She broke many pieces of the "smoke" effect from DCC Batman & Catwoman Kiss statue. Found matching color hot glue and "sculpted" and recreated the broken pieces.
Those are my 3 cases. I'm hoping there won't be any more but I'm sure if/when children get in the picture, it will only be a matter of time for some more damage to mysteriously occur