It is true that expectaion and preperation can prepare you for the blow, my previous wife died unexpectedly at age 33 and the kids and I were shattered.
My father died of cancer when (quite) old, so we were at least ready for bad news, although it was still a hard thing to deal with.
The point is, death happens and you MUST acknowledge the fact.
Bad as it will be when the time comes, (and I hope, not for a LONG time) preperation can help you to deal with it.
searcher.