Answer: The corporeal world is very meaningful. As a result of it, we reach the understanding that our corporeal evolution has reached a dead end. We realize that we have evolved in the wrong way and that we cannot advance further in this way because our egoism leads us to the abyss, to death.
There is a phase in the evolution of our desire to receive that we must undergo and clarify here in this world. Egoism shows us its lowliness, its hopelessness, and its futility. We must undergo all this to feel it, experience it, and be incorporated in it.
This world is very important, and all the internal changes occur while living in this corporeal world. In addition, there are many corporeal changes that we don’t feel in our reality in this world.
It is hard to explain how we perceive our reality if our body is dead. We believe that we feel everything through the body, but this isn’t true. The body is only one of the illusions that we have.
From the 4th part of the Daily Kabbalah Lesson 6/21/15, Writings of Baal HaSulam