They need little maintenance, no drivers, easy to use, and they look great....
My Windows Notebook is Aluminum casing, and looks very nice. Though it can get very cold in the winter, so it's not a complete advantage.
However it costs almost half the price of a 13" MBA even though its specs (outside of screen resolution) are more in line with a 15" MBP Retina (and the GPU certainly is better than the Iris or Iris Pro graphics Apple is using). <$50 upgraded the RAM from 4 to 8GB.
Drivers aren't an issue. Those come through Windows Update or the Control Panel Software is sort of "install once, and it will keep itself up to date" (like AMD CCC, which keeps all the Chipset and Graphics drivers + more up to date from one place).
I did have some equipment for gaming (like a Nostormo) that I bought back in 2006, but the BETA Windows Vista Driver functions flawlessly in Windows 8.1. It's useless on a Mac because that OS isn't as good for compatibility as Windows, and therefore I have no driver for it!
I don't see how OSX is any easier to use than Windows. I have both the Windows Notebook and the MBA 13". The learning curve on both are equivalent and it depends largely on the user (and more specifically, what they are used to - which is why a lot of people cried about Windows 8 when it was released).
The Windows Machine gets 7 hours battery life off the charger easily. That's on par with the base MBP model. But it has twice the RAM, twice the HDD space, a way better GPU, and much better connectivity options for like... almost half the price. I could put an SSD in it for like $100 if I wanted, and it would likely perform like a $1300 MBP Retina. I may do that soon, I just have been trying to avoid having to clone drives and crap like that, Lol. Maybe have the Geek Squad do it for me, since I'm lazy.
I also find that while Macs are great for productivity, especially when paired with iDevices due to the great-quality bundled software and how it works across devices... Software options are way superior on Windows. There is a lot of money to be saved by using Windows as a Consumer/Prosumer in Media Editing apps, and there are some professional-class Video Analysis apps that aren't available for Mac (in fact, hardly any are available for OSX).
Love the MBA I have, but for real work I'm always on the Windows Machine. It has 20x the Software Options, gives you the capability to save hundreds or even thousands of dollars there... And you can get much cheaper machines that perform on par with or better than Macs that cost 3-4x as much.
Security isn't an issue. We've heard more scares about OSX in the past year or two than we have about Windows 8 or 8.1, and certainly more about Mobile devices (and they weren't Windows Phones). Windows has AV/AMW/FW built into the OS and it updates daily (literally) through Windows Update.
The Start Screen can and is an issue for some people. I don't use any Start Screen apps outside of PIM. I use Desktop Software. Windows 10 will bring the Menu Back but, I can understand some people's exasperation with the Start Screen. There is really no way to truly avoid it at this point, short of putting shortcuts to all of the apps you use on the Desktop (and who does that these days?!), Lol.