... I write code for both systems and my IQ doesn't drop by 30 points when I switch from my dev box back to my desktop - at least I hope so

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I never said something alike... It's certainly not my intention here to claim that any platform is "better" than other one, or that it's "stupid" to engage in development work on any platform - obviously Unix programming works better for me, but whatever gets the job done for anyone else is certainly fine with me. The whole point of my discussion is that Linux programming APIs are more stable than Windows programming APIs. I tried to present some arguments, I touched on times 15-20 years ago because I was there back at the time and I think I can draw some conclusions from my experience (for example, I used to know loads of people doing Win32 programming back at the time, and I don't know of anyone that uses Win32 only in his work nowadays). But obviously these and other arguments I've tried to cite don't seem appealing to you, and on the other side I don't buy your arguments either. So I guess we cannot progress much from this point onwards, but at least arguments we provided are there for others to eventually read, and compare with own experience.
I can't speak about all applications in the world but let me check on my desktop if you are that interested (still not sure what are you going to prove with that): Far (native) + Firefox (native) + Skype (native) + VLC (native) + VS2008 Express (native) + Cygwin (native) + I download free Kaspersky Antivirus tool every 2-3 weeks (native) + one more IDE(Java) + few games (native but scripts can be in C#/Lua - not sure about this). And your point is ?
Just to clarify here: Seems that you understood that I was pointing to difference between applications written to execute natively on given machine, and ones written to execute in some sort of virtual machine. I was however asking on applications that are written in
Win32 API directly, and not using any sort of other Windows programming API (like MFC or .Net), or some higher-level toolkit like Qt or Gtk.