I don't think there's anything wrong with desire - I believe we have natural desires that become perverted. We have a sense of lack because we are out of touch with ourselves. I think smoking often results from this by the way, as do a lot of things.
I also don't think that everything is contingent - that's part of the capitalist/democratic fundamentalist belief that there is no other way.
Everything is absolutely contingent! We need to move on from the human all together!
Um, yes, I would agree however that Consumer-capital (obviously) takes metabolic desire and transfers it into a system of ever expanding horizons of desire and identity... (because of the consumerist double-bind: Everyone must be an individual, a self-manufactured art-work, and yet the only method by which this individuation can occur is by an identical process of image-construction through consumption...)