I am always astounded when I meet people who don't care to eat (and I have met a few) they eat enough to survive but not from any real enjoyment - they pick, they complain, they leave things on their plate because they don't care for the colour or texture. When I meet people who don't read, I feel the same astonishment. Imo reading like eating, is not only a necessity in life, but an absolute pleasure that appeals to all the senses, and best yet it's appeal is larger than life because you can use your imagination. Everything you read is heightened, the sights, colours, feelings, sounds, smells and tastes described, become almost more vivid that they do in real life because you "are there" - you are an active participant in the book and it comes alive.
It is not a coincidence that you can savour food or savour a good book - reading is a sensual pleasure like eating dark chocolate, or a warm ripe peach. Just as there is a correlation between sensuality and food, there is also one between writing and reading. Fussy eaters make inhibited lovers - the mechanics are understood, but the joie de vivre is lacking and imo, writers who don't enjoy reading themselves, can't understand and therefore inspire, the pleasure the readers get from mere words on a page.