Why Isn't Everyone Protestant?

i hear a lot among both roman catholis and orthodox iis this kind of desire for apistemic certainty that says, how do wou know the scriptures are true while we have an infallible authority? But as i've said elsewhere, that's sort of like kicking the can down the road. It is a huge reason why a lot of people will leave procesism. And it's something where i think for intellectual reasons, is not all compelling,. because there's a problem of ation, because we're all fallible people.