When it comes to computers now-a-days the reality is not many people are choosing to buy a desktop. And why wouldn’t you? You can get an almost limitless variety of laptops which cater to all needs, thus rendering a desktop obsolete for almost all but the most demanding of users.
So with the majority of users using laptops, this begs the question: what are they running on these laptops?
The reality is this, those who choose to buy a Mac almost always run Mac OS (obviously) with the occasionally user choosing to also run windows along side it.