The joy of Calvinism - where is the disconnect?

Greg Forster offers some sound observations about why so many people are both turned off by the formulaic aspect of Calvinism and why they never experience what he calls the true "energy and vitality and joy" of Calvinism:

The trouble is that people outside the Calvinistic tradition only hear the formulas and technicalities. They don't hear what we say "within" Calvinism; they only hear what we say about Calvinism. So while Calvinists produce reams and reams of positive, spontaneous, and devotional religious writings, the outside world never knows. It if hears our devotional voices at all, it never associates that devotion with our Calvinism; it thinks we're pious in spite of our Calvinism, not because of it. "Calvinism" to the outside world means only formulas, technicalities, and negations.

As a result, the substantial reality of Calvinistic religion, the affirmative faith from which it draws all its energy and vitality and joy, almost completely unknown to the outside world. Even most of the people who worship in Calvinist churches, and are thus nominally "Calvinistic," don't understand what really makes Calvinistic religion such a precious treasure. Because we don't communicate clearly, our own congregants have a very inadequate grasp of what lies at the heart of Calvinism. As a result, they're robbed - in whole or in part - of the everyday experience of devotional joy that a robust and well-formed Calvinistic piety always produces, and, in which, as Calvinists, they ought to be living.(1)

(1) Forster, The Joy of Calvinism, pg. 17.