The human species is hard-wired for communication. There is literally nothing we can do to NOT communicate. Because communication is the fundamental means by which humans have evolved into the dominant species on the planet. In other words, communication enhances, if not guarantees, our survival. As a matter of fact, infants and toddlers in all cultures acquire language at the same rate, and no matter what the language, all of them make exactly the same grammatical mistakes.
All humans communicate.
We learn to communicate by osmosis, literally soaking up the environmental cues necessary to get our needs met. Our brains grow explosively, associating certain sounds, sights, actions and feelings with our experiences. This muscular contraction on my face gets me picked up. That particular scream gets me fed. And by the time we're four years old, we can string a comprehensive sentence together and express our wants and needs more directly.