I use Mac OS on my MacBook as my main computer for doing things on, while the PC that I use for games runs Windows 10. I mean the gap between the two has closed over the last few years but OS X is still clearly the better laptop OS: little things like full screen apps and the like are very good when you're working off like a small 13 inch screen; plus it just seems to have less rough edges compares to Windows for some reason. Plus its also proper UNIX so you can be a little smug towards Linux people who know their stuff.
Linux needs stuff to be developed for it in order to consider switching to it: an Operating System is only as useful as the applications that you can run on it and Linux, while being... fine if you only want to browse the internet and do basic things, its not really any good if you're trying much more intensive than that. I also have nightmares from the time when I was nineteen and a friend bought a Linux laptop and was trying to get wi-fi to work for it and couldn't; just because it was an absolute nightmare to get the thing working and even then, it wouldn't always work. Seems to have been a driver problem since as soon as she got sick of it and stuck Windows on the thing it worked perfectly fine! The Open Source thing is good and can work - consider the fact that 80+% of all web browsers are based on Open Source code and that one of the two major mobile Operating Systems is Open Source for example - but its much easier for people to switch web browsers or office packages than Operating Systems since a new platform needs lots of applications before it becomes viable for people to switch and Linux isn't there yet - and honestly won't ever be as a desktop OS, they'd need to get near Mac market share before they could start getting lots of developers to move over. There's also the fact that its actually very complicated for a... normal person to even consider switching; you've got the millions of different distros, the differences between GNOME or KDE (or the many other window managers) and lots of other things that makes switching to Linux look pretty damn intimidating.
I've dabbled with Linux inside Virtual Machines before but that's as far as I've gone - not got anything that I could install it on really. Not really going to dual boot on my MacBook, considering that its only got a 128Gig SSD.
What in the world is Linux? Anyway, Windows.
Linux is an open source free operating system that's the main server operating system and the third largest desktop Operating System - as well as the thing than Android was based on.