I had the same sort of feelings before I took delivery of my car. After driving a few miles, all the hesitation and attempt to rationalize the spending spree disappeared (it hurts a bit more if you pay full amount in cash).

Now, I'm thinking about the next automobile, and I'm doing the same sort of calculations that easy_rider911 is doing (F430 operation cost vs. Gallardo). But what the hell? These autmobiles are pure bliss. 100% worth the cost of indulgence.