I’m a fan of Open Source technologies and the biggest of the kingdom is Linux, the free and open source operating system(s) that are open build and community sourced.
Linux Distributions (or distros) are based on linux kernel which first developed by Linus Torvalds bundled up with system softwares and libraries available for almost all platforms and even for old hardware. These distros are individually built and maintained by forums like Canonical and Fedora.
These OS provide an unbreakable shield against any malware that could harm your system and thus they are more secure and trust-worthy than others.
But the fantasy of Linux doesn’t here. They are available in some of the best Desktop Environments (or typically GUI) which are flexible as well. These are the most pleasant Interfaces to work with.
DE(s) like KDE, GNOME, Cinnamon, LXDE, XFCE, Manokwari, and a plethora to choose from. In addition there are platforms like AskUbuntu, Stack Overflow, etc. which can get you working on any linux distro you are stuck at. Not to forget, Git, the powerful platform that holds insane amount of scripts.
And Linux adds to its usability with compatibility layers like WINE (Wine Is Not Emulator) that enables Linux Users to work on Windows Applications.
Though Microsoft’s Windows and Apple’s Mac OS are backed by great developers, does it make sense to pay for something just to interface with your own hardware.
On mobile platforms, Linux is already the boss by Android being a Linux Kernel build adopted by Companies.
So, I would like conclude to point that Windows as of today make a lot of sense, but these Open Source technologies are here to stay.