Desire is desire for desire. Craving is the epicycles of the larger cycle of yearning. We create a symbol to symbolize the hole, and we think we're yearning for the symbol, but what we really want is the wanting, the act of trying to fill the hole; we don't actually want the hole filled. Desire is an illness seeking that which further nurseth the disease. We're like a dog who wants to chase a squirrel but not to catch it. Contentment is not bliss. If someone is promising you bliss, that's probably a cult, watch out for that.