It has been said here already but I will say it again, there is no why. Why is a human thing, perhaps an animal thing, at least it is connected to conscious thought. When it rains you do not ask why you can only research how. This is a difficult lesson, we live in a human culture and so feel comfort in being able to ask why people do things as well as how. Not having the why attribute for the physical universe feels cold and inhuman, but the universe is inhuman, even if it’s difficult that is the deal.
I think Sunday evening, about seven has the most difficulty based solely on position in the week. Throughout your entire life that is the time you are most regularly aware what is being taken from you.