Keep driving your XF in all kinds of weather. It won't be worth 14,000, shortly. But that's the beauty of the XF, I keep mine in the garage out of the weather (except an occasional rain) because that's what I want to do with it. It is still the best value there is as far as I'm concerned.
Oh, and congratulations on your happiest of days. Mine was 2 years ago, and still is.