Why do I use the Windows, huh? I could go for some simple answers like the innovations or that it runs all the best games or the different kinds of hardware. But to be really honest, that's not why Windows is my choice. The reason why I go Windows is in fact the reason why a lot of Apple users go Apple:
The ecosystem.
Yes, the ecosystem. Not only am I a Windows user, but an avid user of Office and OneDrive and Outlook. The fact that I can have my everything everywhere is so very appealing to me, more than innovation or diversity, although the later does contribute to why I'm aboard the Microsoft ecosystem and not the Apple ecosystem.
Apple's ecosystem is, for the most part, a "walled garden" (not my term). That's to say, the best functionality comes between Apple devices, and that's it. By contrast, how Microsoft has built their ecosystem to be so cross platform that it works on anything is really amazing, and that alone makes me believe that Microsoft's ecosystem is indeed the best ecosystem, even above Apple.