If it werent for MS, we'd be using much less powerful hardware than we do now.......
Because it was inefficient bloatware that needed powerful hardware to do anything useful...the complete opposite of Amiga OS;)
Who needs high-end multi-core CPU's for day to day stuff when you have Android for example on low power devices with CPU's running <1Ghz !?!
The only thing I truly like about Windows is the excellent emulators out there (Fusion, UAE, Spectaculator, FBA, MAME, MESS and so on). I can do office stuff on my Linux laptop.