Have you ever developed commercial applications?

>Well, lets see. For 25 years I have been writing business apps using Windows development tools. Not one customer EVER has brought up the way my apps look. They might change a few asthetic things like a font size or move a button. But no one has ever said to me, "You're applications look terrible compared to this one over here". They're concerned with how it works, not how it looks.
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>Again, I'm going to learn this. I have to. But the summary of the reasons for learning WPF that I'v seen so far is that I can dazzle people with my apps, and people aren't paying me to dazzle them,