First, habits and hobbies lead them to hoard books. Everyone has his own hobbies. People who like reading like to buy a lot of books, create a reading atmosphere and let themselves travel in the world of books. Even if they haven't read the book, they will buy it for collection because they like reading. Habits will also make them like to hoard books. Some people have the habit of collecting books. Whether you have seen it or not, buy it if you think it looks good.
Second, people who really like reading will hoard books. In today's stressful society, people who really like reading can take reading as their own way of life, and can relieve their pressure and relax from reading. Some people who think reading is good will like to hoard books. In this way, they can not only feel at ease, but also use books to enrich their lives and make themselves better.
The third face caused some people to hoard books. Now many people pay more attention to face. How many books are there at home, which makes them feel more educated and elegant. Telling others that there are many books at home can make people envy and satisfy their self-esteem. This makes some face-saving people hoard even if they haven't read books.
I don't think it's necessary to hoard books. You can buy that book if you like. Don't buy many books at once, which is not only a waste of time, but also a waste of money. It's not that there are many books that make you literate, but that you should learn to look at problems rationally.