People die because of the sin in the world, when Adam and Eve were created they were not supposed to get sick or die they were allowed to do anything in the garden God put them in except take the fruit from this one tree but they disobeyed God and ate the fruit so God punished them and made them work very hard for a living and told them that they will soon die and all of their children will too (Which we are there children). So that is why people die based on my religious reasons.
A. You should cross the answer out so you remember what you have used it is so easy to forget what you have used.
Maybe it not meant to be or it complicated
There are a lot of names for it. The most common is senior slump and senioritis.