> holding down multiple keys at the same time is not user friendly, especially for noobs.
The problem is that "noobs" generally don't care about keyboard shortcuts at all, especially if there's already a large button in the top left of the screen (or the bottom of the device) that does exactly what they want to do. The only keyboard shortcuts my father remembers, for example, are Ctrl+C and Ctrl+V, and he's been using computers for 25 years.
Keyboard shortcuts need to be simple enough to be memorable, but also not too simple so that you don't press it unintentionally. A single key that is also commonly used for a different purpose doesn't seem to fit that criterion.
I"d hardly say hitting one key with your finger is a keyboard shortcut. Some noobs, hate the pointer when they first encounter it, and will avoid it if possible.
The problem is that "noobs" generally don't care about keyboard shortcuts at all, especially if there's already a large button in the top left of the screen (or the bottom of the device) that does exactly what they want to do. The only keyboard shortcuts my father remembers, for example, are Ctrl+C and Ctrl+V, and he's been using computers for 25 years.
Keyboard shortcuts need to be simple enough to be memorable, but also not too simple so that you don't press it unintentionally. A single key that is also commonly used for a different purpose doesn't seem to fit that criterion.