The real question for me is, why do people use computers?
To get thing done. to accomplish tasks and perform services that will likely assist getting a certain job done.
What is an OS for? for people to interact with the computer in able to perform said tasks and services.
I don't think anyone would argue, one of the primary reasons windows is success is because it "tries" ( doesn't always succeed, but it tries ) to make those tasks and services as simple as possible.
One could even go so far as to say, an OS's primary role is not just to provide interaction with the computer, but to facilitate that interaction.
One of Windows greater failures is that it doesn't allow those people who need or want access to the "guts" of the machine or, to use the infamous auto reference, it locks the hood. " Sorry, you can't do that tune up yourself, got to have permission from the factory to do that. sucks to be you."
Why, because many people have the interest to work on their own car or computer. to make it go faster, or pull more weight, or carry a heavier load, etc.
Things that the people can learn to do that will save them money and make their car/computer customized to their specific needs.
Now, do all people want to be a mechanic/tech just to have their car/computer "customized/optimized?Of course not. BUT , we want to know it is possible, because maybe, I have a neighbor who is mechanically inclined/computer oriented who might "trade me" He'll work on my car/computer and I'll frame up his new deck ( cuz I'm a framer/carpenter maybe).
At least I know, even though I am not going to work on that computer myself, it can be done easier and cheaper than going back to the factory.
SO. what do I want Linux, a computer OS to do? I want it to facilitate and help me, as easily and directly as possible, get my tasks/work done on it.
I am willing to learn how to work with the computer, I just shouldn't have to be a tech to learn how to use a word processor.
( note. I am one of those computer oriented people who likes to work on computers, but I know that there are many many more people who are exactly as I describe, my wife and kids among them. My clients are people who want to use a computer, not be the tech for it just to type letters or print images.)
That's what I think people Use Linux, to have a better way to use a computer.
just my two cent,