Well, you have to look at those versions a little bit finer grained. Windows NT 3.51, 4.0, 2000 and XP were all very usable in a business environment; Windows 9

Well, you have to look at those versions a little bit finer grained. Windows NT 3.51, 4.0, 2000 and XP were all very usable in a business environment; Windows 95, ME and Vista not so. Windows 7 seems workable, and with Windows 8 it seems that Microsoft wants again to alienate their business public, catering to 'consumer tablets' instead. The funny thing is that during all those transitions, the basic Win32 API stayed more or less stable. The programs I wrote for XP (or even Windows 2000) still work well in Windows 7. They just don't have the visual bling (which my customers don't need anyway).