I understand where they’re coming from – it feels personal when you don’t get that kind of tangible support from people who are important to you.
On the other hand, it’s important to remember that we all have our own taste in books. You might love to read and write science fiction while your work or college or neighbor friends prefer to read memoirs or mysteries.
So . . . if your pals don’t generally read the kinds of books you write, is it fair to expect them to buy your book, even if they’ll never open it?