But that same argument applies to lightning. I can't prove that every--or indeed any--lightning bolts are not in fact thunderbolts being hurled by the hand of Jupiter/Zeus/Odin. And that's emphatically NOT a glib comparison: the major civilizations of the West believed that to be the literal truth, for at least as long as Christianity has been around. You cannot prove them wrong.
For that matter, the argument applies to disease, incontinence, gravitation, peristalsis, hair growth. Sure, material explanations exist, but that doesn't rule out magic.
For what is that thought, but immaterial.
Pattern of material. It exists, but not independently of a material instantiation in a brain, a computer, or a sheet of paper. Mickey Mouse possesses immaterial reality in exactly the same sense. Forgive me for not questioning my reason or bowing down to worship in the face of such examples.
You'll have to be the unforgiving to yourself, I'm must say. It's not to me to forgive you or not. It's your own "mens rea". Why are you so confused about who threw those thunderbolts, btw? You think that Odin et al cannot be shown a myth?