Often the lust of wanting the next bike is where the pleasure is. You already have great bikes to ride, and once you get that vintage steel bike, the desire will wear off. I'm sure the Madone can do anything you want it to, short of touring.

I have the opposite problem, I only have steel bikes, and my LBS tempts me with how great the Trek carbon is. So when you DO get that steel bike, please give us a comparison report.