My proof is that everything within the Torah is brilliant. All the mitzvot make such beautiful, perfect sense. I know with certanity that if I managed to keep all the mitzvot perfectly and I lived in a society that did as well, I would live the absolute happiest life possible.
I went off for a few years because the BY education I was given would twist and manipulate the Torah using this random perush and skipping that concept to make it more fluffy and appealing. I came back because I discovered the Torah in it’s naked truth and I recognize that there is nothing more genius than the Torah.