It's said there are stages of grief. Could be five. Or seven. Or ten. The point being, in any case, that there are identifiable phases of the grieving process. Experts more or less agree it's some variation on the following theme: Denial. Anger. Guilt or blame. (This stage is full of "what ifs" and "if onlys" and some call it "bargaining," as in "I'll never do such and such ever again if I'm spared this miserable fate.) Then comes depression. Followed by acceptance.
I think it was Thomas Jefferson who said that expecting each new generation to forever live by the customs and laws of past generations is like expecting adults to wear the same clothes that fit them as children.