Hmmm, where is Retired Chief when we need him.....
Static powerful enough to degrade, if not outright destroy, delicate components can be at least an order of magnitude below what you can feel. I too have been lucky, in the past mostly using only basic precautions of frequent grounding, minimal moving around, and being conscious of my surroundings; but a couple years ago I started using an anti-static wrist strap. It's such a minor thing, and the potential consequences of static far outweigh the minor inconvenience.