Why? Why am I paying a barber to cut my hair with a clipper on #2 setting when there is hardly any hair left on top? Why am I bothering? What is the difference between #2 and #0 I thought? Not much I thought. Why not just start shaving it off and save myself the barbers fee? So I did, I shaved it all off that weekend, secure in the knowledge that I could always let it grow back if I didn’t like it. But little did I know that my biggest lesson in how attachment works were to be found in that seemingly simple rational decision.