One thing library school professors don't tell you about public librarianship is about how thankless it is. I can't speak for other library fields, I can only talk about my years of working with the public. But I knew this before going in, you don't become a librarian only because you like to read or like books in general. You do it because you genuinely love to help people and answer any and all questions imaginable.
During the holidays, patrons go out of their way to show their appreciation. This was our break-room from this past holiday.