Except you do. That's how they manage to keep the experience of using their products so simple. They go through every UI dialog and say, "Do we really need to give the user this option, or are they going to want to hit this button 99+% of the time?" and if the answer is that the user is generally going to want to hit that button, then they'll remove the dialog and just have that be the default behavior.
The alternative is to have endless popups. IE, what should happen when you download a file? The answer, 99% of the time, is it should go into downloads, TYVM, get out of my way. Other OS's and browsers will present other options when you want to download a file. You as the user may not even understand the implications of certain choices.
If you don't like Apple making the choices for you, you should ditch iOS and get pure Android, and you should ditch OS X and get pure Unix or Linux. Then you can begin to understand the choices that Apple has made on your behalf and the time and frustration they've saved you in doing so. Or maybe you really like all that control, and you don't like Apple making those choices, in which case, good for you, stick with those other platforms where you can make your own choices.
I, for one, think the choices that have been made tend to be pretty good... there's a few exceptions... Mission Control really sucks and I can no longer organize 90% of my windows because I no longer have a grid of spaces to work with... the only organization I have is Spotify is always full screen to the right of my main space, and everything else is piled up in my main space.