Why is death a taboo in western culture?

It is a fact that, te word death and its meaning is a taboo. But why is it a taboo?  In my opionion, it's for things that it generally involves. I agree that death is not a pretty thing but not for that, it must be a taboo?

As I see it, people don't want to talk about it , because of we all have a family member or a friend that pased away, and is not nice talk about that person. Althought everyone knows it's part of life.  Another reason is because often we don't want to talk, thing about death until it happens. We don't want to thing about end of life. And also in some cultures it's forbidden to talk about death.

It's clear taht it isn't a good thing to think or talk about it, and we know that involves a sad feeling and amoments, but death althought it's not a good event, exist and everyone has to go throught this, so we only need to take it in the best possible way ad talk about it without any problem, because it doesn't need to be a taboo.