My current keyboard looks like this:
(Well, roughly. It actually looks like this, but I couldn’t find a decent-resolution Swedish one.)
This was a sensible design for the right-handed majority when it was introduced, some time in the stone age. However, since then, something quite important has happened: the keyboard has been joined by another input device, which I suspect is used more than the keypad by most people who are not cursed with an Excel-dominated career.
The ergonomics of the extended keyboard + mouse combination is quite, quite horrible. The human arm is not optimized for sitting turned out 30 degrees for hours at a time.
Apple has tried at least twice to solve this in one obvious way: remove all or part of the junk on the right. This has been widely, or at least loudly, decried, leading to the Extended ADB Keyboard for high-end Macs in the deep past and to extended keyboards for all in the USB era. There is another solution, though:
Unfortunately, day-to-day conservatism means that people, in the aggregate, will loudly complain about having to adopt a superior solution if it involves half an hour of retraining. I’m sure many would point out that this is why we still have rectangular QWERTY keyboards in the first place. Still, if anyone can force change down our throats and make us like it, it’s Apple.