Reality Check: Damn few of us actually "need" what we drive. In fact, most of us could get by with much less vehicle but we choose to drive an X (or any other vehicle that exceeds our minimal needs) because we want to - and we gladly pay for that luxury. It's as simple as that.
Now I'm not saying you should or shouldn't get the S/C but let's stop pretending that not getting it has anything to do with the increased annual fuel cost. Anyone who really takes those concerns seriously is driving a Civic or some other uninspiring, boring, piece of econo-trash.
Get real - we drive what we do for the sheer fun of it. More power = more fun. I know the S/C is frivolous and unnecessary but so is most everything I enjoy in life. Let's face it - most people spend more than a couple hundred bucks a year on beer and cheese whiz so don't be giving us this B.S. about how "expensive" the S/C is. Of course it'll cost you a little extra but if you can afford to buy, insure, and maintain an X you sure as hell can afford to drive one with a supercharger.
I entertained the same thoughts but in the end I got the S/C simply because I wanted it - no more justification is necessary. Do what you want, whatever that is, or when all is said and done you'll regret it.