[Porsche-O-Phile]

Death is loss - permanent loss.

Because of this I can think of no situation in which it'd be normal to celebrate a death of anyone other than an enemy who will not be missed. For a loved one? Loss is always bad. Love is rare and the people in this world who touch us are equally rare. When one of them is lost, it is a setback and IMHO not something to celebrate at all.

Certainly there are situations which make the person's passing more acceptable (if they were suffering and it has now ended, etc) but I don't ever see losing a loved one (or even an acquaintance whose company I valued) as a good thing. Our worlds become less rich and less interesting and only more empty and lonely. For this reason, the grief is natural, as nobody wishes that.