Maybe crying is a means of cleaning yourself out emotionally. Or maybe it's your last resort; the only way to express yourself when words fail, the same as when you were a baby and had no words.
AristotleIn a word, acts of any kind produce habits or characters of the same kind. Hence we ought to make sure that our acts are of a certain kind; for the resulting character varies as they vary. It makes no small difference, therefore, whether a man be trained in his youth up in this way or that, but a great difference, or rather all the difference.
Aristotle