Damien originally thought of Existence as a teenager who was still learning how to control their emotions, but as he interacted with it more, he learned that it was more like an abandoned puppy.
It felt extremely uncomfortable with any and all feelings. As it developed a sense of self, the emotions it experienced through others were separated from it by an invisible wall. Everything Damien did surpassed that wall and affected it directly.
Any and all things beyond the wall terrified Existence. It was experiencing the unknown and needed to overcome it to make progress.
So, that was where Damien started.
He chose simpler methods, deciding that he could use more complex things when it started to learn how to cope with having its own emotions.