The first man was created with only bestowing Kelim, Galgalta veEynaim. He did not have desires to receive, the AHP, for he still needed to acquire them. And he did not simply need desires to receive, but desires that are ready for correction, meaning desires that include sparks of bestowal.
There is no need to correct the Galgata veEynaim since this is not a person; it is an angel in the Garden of Eden. What was needed was a person with a broken soul, with all the preparations for correction, and this is why the breaking occurred.
However, breaking alone was not enough since a person does not feel that he is broken – he was born this way! Being broken, he has no contact with the Light relative to which he could measure himself and realize his state. Now he needs to gradually accumulate the definitions inside himself in order to understand that he is broken. And he does this due to two components: his desire to enjoy and the spark of bestowal. They both need to be cultivated.
He engages in this until by checking one against another, he reaches a state of disappointment. Then he can begin the correction in order to become human.
From the 4th part of the Daily Kabbalah Lesson 7/19/20, “Introduction to the Book, Panim Meirot uMasbirot”