[thesimp]

And that was a great user experience:

Note the scrollbars that indicate where you are in your document/file list. No guessing on how many pages (if any!) there are to go.

Note the edges of the windows that can be clicked on with a mouse with confidence. I don't need to be a 16 year old pro E-sports gamer to hit that 1 pixel edge as in current desktop environments.

Note the clear button UI. You know 1: what part of the UI is a button and 2: if a button is active.

Note the cohesive windows and colors. No mess of different UI toolkits, each with their own buttons, menubar layout and color space.

But then I am not the target audience anymore: The desktop power user is a dying breed. 95% ( * ) of the people in the world view "the internet" via a small screen on their phone and have no interest in running multiple programs at once, managing large amounts of data on file systems, or even running their own PC.

(*) random statistic that I made up.

[einpoklum]

The fact that a large userbase has evolved on smartphones does not mean that the desktop userbase is dying. In fact, it's probably increased in size somewhat. And we need to make UI designers understand that what may work and be appropriate for a smartphone or tablet should not be applied to desktops.