I read a huge amount - history, historical fiction, social science, popular novels, even cooking or pet mystereys when I need something light... Also art, craft, cooking, how to - whatever strikes my fancy...
I read so much I can't afford to buy books retail, which these days is no problem because books are so devalued they are now often free.
I pick my books ... Based on leafing through them, reading the book blurb on the back, being familiar with the author, the genre or one of the reviewers. For cookbooks I read through a couple recipes and look at the index. For art books I leaf through them.
I have no problem rejecting books if they seem poorly written or boring, if they have editing errors, if I just don't like it or it doesn't grab me.
I also have no problem deciding not to read or not to finish a book, although I don't do that very often because I know my tastes.
Try reading a bit here and there or reading the first couple pages to see if it grabs you.