Comment by ofalkaed

>You may not think the reader should be interested or should care at all?

You can but that does not mean you should. If you write under such assumptions your writing will likely not be of much interest to people who don't share your interest, you will be preaching to a choir and much of the choir may be interested in a different aspect or care about it in a very different way than you do. Writing under such assumptions means your writing depends on those assumptions. No idea why you think this is writing-as-bookselling and marketing, preaching to the choir is almost always better for sales than trying to win over people who don't care and are uninterested.