I just don't get the Due concept. I just feel I must be missing something obvious. Someone please explain it to me.
Surely, if I need more processor, then its because I'm doing something fundamentally unsuited to an operating system-less device like the Arduino. I.e., image processing, DSP, MP3 playing etc. If I need an OS I'd have Linux on a Raspberry Pi.
Arduino is a device for electronic hobbyists. 16 million things a second is faster than I've ever needed an Arduino to perform.