I found it presonally theraupeutic to scrap one of my worst personal crisis ..a miscarriage I had last year. its not the most creative of pages but its my memorial for the child I lost and for her sister (now sisters) to know about when they are adults.
You can see it here ...
http://www.geocities.com/shelleyrae1/layoutspg4.html at the bottom
I think if you are going to say that scrapbooking is about memories it needs to be about both good and bad