> Way back in the past (around 30 years ago) I remember reading an article on "how to read a book" or a similar subject. They argued that, you should not skip the acknowledgments, preface and other "personal" related sections of a book, because it was there where you got a glimpse of the person that was writing the book. The idea being that, you should had in mind that the person writing was explaining something through you

Maybe? That is one reason to read, but there are a lot of other reasons, too. It doesn't mean you are doing it wrong if you want to read something and don't care at all about the person who wrote it.