[citation][nom]A Bad Day[/nom]I don't use Linux because I don't feel like dealing with compatibility issues.[/citation]
The compatibility reason and the user friendliness is why I use GNU/Linux, but much depends on what you are using your OS for. People who uses their computer only for e-mail and surfing, Linux would be a better option, for those who uses their computer for gaming, they still will have an advantage to use a microsoft OS, those who are into professional publishing OSX would be the best option.
If just looking at the compatibility part, Linux comes with a wast more drivers for hardware than what microsoft does include in their installations, sure there are times when there are Linux drivers missing for new hardware, but that's true for microsoft's OS:es too, how many times haven't you had to go to a 3rd party site and download your driver to make your X-hardware to work?
[citation][nom]A Bad Day[/nom]And the business market share is very, very large. There's a reason why there are "Professional" and "Server" Windows editions.[/citation]
In the business world, microsoft is one of the small players and there are reasons for that, first you need to buy another type of license to get another type of crippled version of the OS, the instability of the OS and sometimes even incompatibility with server hardware. Keep in mind in this section GNU/Linux has a 60% market share. Today Linux is the most used operating system, more used than mcirsoft's operating systems together, as you can run Linux on almost every hardware you find out there from routers, dishwashers, TV-sets, cellphones to super computers. The only market section where microsoft dominates is desktop and with ms-window-8 I guess Apple will take a huge step closer and have the possibility to take over the crown (if thye play the game correctly).