Why don't Christians celebrate death? Why don't they celebrate when their loved ones die? After all they are?

Yes. Ancestor worship is probably more properly the first religion than animism.

The concept of the afterlife began around 3100 BC. In a land just beyond the Mesopotamian world, an unusual custom had begun called a retainer sacrifice. Royal family and court members that belonged to a particular pharaoh were willingly sacrificed and buried around his tomb to continue serving him in the afterlife as a god.

This is where the idea of humanized gods or demigod begins but thats another subject entirely. About a thousand years later in the First Intermediate Period of Egypt, the Coffin Texts appeared which were spells written on coffins as a kind of backdoor hack for commoners to gain entrance to the afterlife. The tradition went viral and the afterlife was no longer the sole domain for royalty.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.