There is no doubt that humans tend to, or prefer to, think in metaphors. Much of it is laziness, I think, and some of it is how our brains try to work efficiently. We have posted on this subject in the past.
We use metaphors to make the unseen and unseeable feel real, so we can handle it and talk about it. However, metaphors can just as easily be deceptive and misleading as they can be illuminating: it depends on the integrity and intent of the creator of the metaphor.
Psychologists try to take on metaphor - with, of course, the tools of their own metaphors. You end up with towers constructed of layers of metaphors. These are often termed "theories."