When you get right down to it, it’s the adrenaline I’m after, along with the precious reward chemicals that will flood my brain when I hold the new CD in hand, providing an-all-too temporary reprieve from the stress of my driven state. But I’ve barely left the store before the adrenaline starts pumping through my circulation again, my mind fixated on the next purchase. Anyone who’s addicted to any kind of pursuit—whether it’s sex or gambling or shopping—is after that same fix of homegrown chemicals.