That's because the OS was actually carefully designed by HCI (Human Computer Interaction) engineers to account for how the human brain works, and then work with it. Windows was basically a slapped-together shell with little thought of the people who would be using it.
And yet it does everything I want it to. Guess it was just luck that did this.
I guess what most Mac enthusiasts don't realize is that I don't care to have an "experience" with my PC. I don't want to spend that much time or thought on it. It's a computer not a sexual partner. I just want to plug it in, do what I want and then turn it off again. Of course, for some people that does kind of explain their sexual needs, too. =)