There are few more fulfilling hobbies than having a love of books.
Reading isn't just a great way to have a good time. Reading increases brain connectivity, makes people more empathetic, reduces depression symptoms, improves vocabulary, and may even cause you to live longer.
It's a huge benefit for a child's development as well. According to Parent.com, reading "stimulates the side of the brain that helps with mental imagery, understanding, and language processing, and that brain activity."
Sure beats wasting time playing video games.