Life is full of unexpected occasions, we never know when or where our fullstop of life will appear. By exploring the subject matter “death”, thinking of it cautiously, we could review our inner self, review what death means to us, then discover regrets that we might have in life.
Some regrets come from decision made, some from action we didn’t take... When we discover regrets sooner, we got a bigger chance to fulfill it. So, it is to appreciate life by studying “death”.