"Informative" and "entertaining" are both valid goals for non-fiction writing (and, indeed, fiction writing, if you squint enough to recognize that it can conve

"Informative" and "entertaining" are both valid goals for non-fiction writing (and, indeed, fiction writing, if you squint enough to recognize that it can convey "information about how people think/feel/act"). Arguably, the ideal would be to achieve both; but, achieving either is perfectly fine. Most non-fiction aims to inform, and most fiction aims to entertain, but either can do either.