I ditto what has been said - lost a grand parent, and an uncle to terminal cancer - now that was horrifying - visiting one week, seeing said uncle fully able to communicate, move around etc, the next week visiting and seeing the devastation making communication impossible, his ability to speak reduced to incoherent gibberish by the cancer.... making 'm seem .. helpless .. then another week or so later... the cancer had taken his life. I am not horrified by much, not easily anyways, but that takes the cake.
[and I note the easy perception of irony given my steam name]