I have to disagree with you there Zep. There obviously is a market (maybe not as much is the US) or else the Mercedes E55 AMG wagon, Audi RS6 wagon, Magnum SRT-8 wagon, BMW 545 wagon, etc would not exist or succeed.
If you've ever been on the autobahn, you know the majority of fast movers are none other than wagons. They may be more practical, but that doesn't mean they are any less of a performer. If anyone, you should know that since you have one