If you pre-judged an owner and asked, "why did you buy that when you could have bought, say, an CLS 63 AMG and spent the change on a bungalow?", the answer would likely be, "If I wanted one I'd have bought one, but I didn't.".
How do you respond to that without resorting to name calling?
I have absolutely no idea what these cars are like but owners are fiercely defensive about them so they're sure to have deep qualities which influences their decision to buy them.
Eccentric perhaps? Is there something we don't know about them?