Ever since I was little, I've loved making hand-made cards and presents and arts & crafts for people. The book gives me a similar experience. I love being able to hold this object in my hands and say, "This is mine. I made this. It is a gift for you. " I love that feeling. Especially since this particular object contains ten years worth of my poems.
If you're at my level and you go to a bookstore, even a good turnout is not that many people. Sometimes it is. But for the most part, it's not a huge turnout.