As a blog writer, I’m also a blog consumer. I read for fun, to learn, and to see what topics are "hot". Without getting into the statistics of it, there are tons, literally tons of people who feel they've lost their joy, meaning, and passion.
One of the most important things about self-care is that it improves our mental health. When we don't take proper care of ourselves, we're much more susceptible to feeling anxious, depressed, and out of control. When we feel out of control, there's a greater chance that we'll use harmful coping mechanisms to suppress our emotions.