This is my rule too. My boyfriend laughs at me. I'm tempted to show him this thread.
I also:
don't turn on the dishwasher and leave the house. (I will turn it on and go to bed.)
don't go outside if I have something cooking on the stove.
don't leave the toaster plugged in (have heard of situations where they mysteriously turn on and start fires)
don't leave the house if the toilet is still filling (my secretary years ago used her upstairs restroom and left for two days, came back to find the toilet had been overflowing for two days and she had $40,000 in water damage in her condo).
One other thing to consider, if there is damage to the
DVC unit (i.e., carpeting has to be replaced, for example) then under the circumstances that cost from my perspective should not be charged to DVC owners but should be payable by Disney because of its employees' negligence in not getting the problem corrected.