Of coarse I've used the operating system.
I've learned it and have used linux as my desktop for 2 years. The reasonsing behind why many people use that OS is flawed.
They can get things done quicker? NO, thats wrong, you can't.
Alot of the times the reason why people use them in say companies is when there are say a couple individuals using that OS and they're considered to be computer savvy, when they're really not.
So the other employee's think it's (COOL) to use it? That's the same with online. Your cool if you know it. That's it. The operating system it's self is NOT better than windows in any way.
You can get things done quciker in Windows, it saves you time, you can do more actually. So yea, I don't hate linux but I have no idea why people would use it as a desktop.