John Gruber recently interviewed Brent Simmons, creator of NetNewsWire. “Interview” might be stretching it a tad; it comes off more like the two of them are yakking over a cup of coffee. Great stuff here.
I worked on the Windows version also. I wrote a fair amount of Windows-specific code, even. And I learned that I don’t really like developing for Windows very much.
I suspect that many Mac users are like me, that they’re driven in part by aesthetics. And they want to use software written by people who are driven by aesthetics. Windows is not aesthetic.