As children, routine gives us a feeling of safety. As adults, it gives us a feeling of purpose. Interestingly enough, those two feelings are more similar than you’d think (at least, their origin is the same). It’s the same thing as the fear of the unknown: As children, we don’t know which way is left, let alone why we’re alive or whether or not a particular activity we’ve never done before is going to be scary or harmful. When we’re adults engaging with routine-ness, we can comfort ourselves with the simple idea of “I know how to do this, I’ve done it before.