Intense desire can be a habit, a fashion or a tradition.

From The Passionate State of Mind by Eric Hoffer.

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Intense desire can be a habit, a fashion or a tradition. It is then apparently unconnected with self-dissatisfaction. Nevertheless, it still retains the structure of its original derivation, and many of the attitudes that are induced by stirring up discontent may also be induced by stimulating sheer desire. The proclivity for change, the receptivity to faith, and the readiness for self-sacrifice are strong both in those who are at war with things as they are, and those who merely desire "more." The fact is that those with the habit of intense desire are only tenuously attached to their lives and possessions. They are, whether they know it or not, the antithesis of the conservative.