I am surprised, by the way some people here talk about their wives you would think they would jump up with joy when their wives pass on. I remember one quote I saw on FB, cannot remember the exact words but it is something like ;'husbands and wives should remember they are potential widows and widowers and should live as such'.
Two disease processes stand out here: cancer and preeclampsia/eclampsia during pregnancy.
That guy who lost his wife and triplets should have had the kids delivered earlier. She was severely preeclamptic to begin with yet the gynecologist was waiting for her to reach full term?? Negligence of the highest order. Sad!