I’ll go with the low-hanging fruit: Mein Kampf. I’ve read it, cover to cover. As a piece of propaganda, it’s good. As an example of good writing? Absolutely not (though I will admit I have only read it in translation). Oh, and the whole fascist, racist, and generally shitty worldview of the author that he infuses into the text. And the fact that the author is literally Hitler. You 5-star that book? You’re a Nazi. Period. And as a Jewish person, I don’t look too kindly on them.
I was born and will die an atheist who doesn’t entertain the slightest belief or even interest in the supernatural, but Saturday morning Torah study with a good rabbi is a fine way to spend a morning hour. I typically duck out for coffee rather than attend the following service, however. 😀