ARM is awesome. Specially the low end Cortex chips.
However, for hobbyists these chips are not that easy. None of them come in DIP packaging so instead of simply soldering them in a simple prototype board or sticking them in a breadboard you will have to find SMD adapters or create your own PCB.
However, for hobbyists these chips are not that easy. None of them come in DIP packaging so instead of simply soldering them in a simple prototype board or sticking them in a breadboard you will have to find SMD adapters or create your own PCB.
That is where AVR and PIC win big time.