I've noticed that many people that use Windows tend to hate Macs and Linux. I ask because I use a Mac (more specifically a MacBook Air) myself and I like it a lot, due to Mac OS X's ease of use. My dad also really likes Linux. To him, CentOS is one of the best distributions and he's talking about getting a new computer (which would come with Windows) and dual booting Windows 7 and CentOS. However, many Windows users seem to hate Macs and Linux. Why is this? I have nothing against Windows (or Linux for that matter, I personally actually like Linux a good bit myself), especially considering it was the operating system I used dating back to Windows 98 and I even like Windows 10. Why do Windows users dislike Mac OS and Linux so much?