I did what I would do to any friend of mine who got semi-hysterical over something pointless and non-sensical. I'd hold up a mirror to show how their actions are being perceived in context. (Hence my "constructive" comment.)
I'd slap you if I could, btw. Not necessarily to hurt you, but to make you snap out of it. You're being a bit too much like a 15-year-old gone Goth on this topic, and you are more than better than that. There are much better ways to compensate for the shallowness and consumerism of humanity than to take offense over well-intended greetings from others who extend those graces to you.
Look at it this way - I have no choice unless I want to be shunned by family, I have to take part in this farce and I long for the day that I don't have to. But until then I fucking hate having it rubbed in my face by well meaning fools. Christmas is a day that to me signifies so much that is wrong with humanity and it is so cynical that it is unbearable and there is no escape from it.
Whatever pisses you off up there, man. Be it your town, city, state or the whole fuckin' country. Wherever you can live in peace and tranquillity, anywhere that doesn't tick you off. Anywhere that makes you more happy than pissed off. There.