Yep, there's plenty of info out there on how to use and manage linux, but you shouldn't have to read any of it for day-to-day usage. In order to do anything in linux, you have to know beforehand exactly what you're planning to do, and hence what command you need to enter with specific switches. Linux users talk about "user-friendly" as a pejorative - why would you want something to be easy to use, when you can have so much more freedom of configuration and operation without it? An operating system is supposed to be easy to use. It's supposed to facilitate the use of the computer, not be a use in and of itself. Windows has pointers and prompts - intrinsic documentation, rather than internal (man pages) - which allow you to do what you want even if you don't know, or don't remember, how to do it beforehand. "I'd like to change some settings on my sound card. Well, I start by pressing 'start', now settings are in the control panel, and, oh look, there's a thing called 'Sounds and Audio devices'". Linux front-ends are getting better with this sort of thing, but there is still an awful lot of very basic tasks for which the first instruction is "open a terminal window". And if you don't know which command you're looking for, man isn't going to help you.
There's a large element of intellectual snobbery involved - people who aren't smart enough to use linux use windows because they don't know any better. I'm an example of someone who is smart enough to use linux, I've had to use it for many different things over my years as a computer systems engineer, and given the choice, I'll go with windows every time. I shouldn't have to use all my years of training and experience in order to just use my damn computer.
And if you think you don't have compatibility issues, it's only because you've learned to live without the vast swathes of hardware and equipment which don't work under linux. Some of these things you can bash about until you get something that kinda works some of the time, and call it working, but again, that's a lot of sunk resources to plug in a camera or play a game (don't get me started on WINE).
Sure, linux is better protected against viruses and adware. I suspects that's as much because of its enhanced security as it is because linux users are vastly fewer in number, technologically literate, and paranoid, and thus not worth the effort. But either way, if it's just as effective at thwarting the poor schmuck who has to use it as it is at thwarting spammers and hackers, then how useful is it? Really?
