Otherwise, without that Perfect Purity, who can receive him as the Agent of reconciliation? It is a resonable trade for humans. We don't know, and can trust the Perfection of God. Otherwise, who would bother to apprehend that trade as a Benign Benefit?
I saw a major flaw in this thinking before I left Catholicism.
I had already reconciled that reality at its base is the Tao (with every expression bursting forth). That meant the oneness of everything, including me with God. This meant that when God was forgiving me, what was actually going on was I was forgiving me, because I was God. This gave me a view of religion as a ritually induced schizophrenia which allows a person to be able to forgive themselves by creating this alternative "God" persona within their psyche which they consider separate, empower that God with the ability to forgive them, and then dispense with their guilt through this separate part of them that is able to forgive them, even if they might not have been able to do so with their normal persona. This is a real problem for me because I am FAR less forgiving than the persona I created for God, and that God trick stopped working for me once I saw the mechanics behind it. It was a real struggle to figure out how to consciously forgive myself, but I managed eventually.
That said, I miss that feeling I had after confession. I recognize now that I tricked myself into feeling that way, but that doesn't mean I don't miss the feeling.