I have kept most of my mics boxed and in a gun safe with silica gel for years; there is usually one mic hanging and that is covered with a Captain Morgan or Crown Royal velvet bag. I have no desire to buy a mic monster: MIC MONSTERS! But my concern isn't dust, smoke or moisture; it is about the diaphragm. Even when stored, mics always hear, correct? That means they are in use 100% of the time, correct? This means a mic is getting wear and tear 100% of the time correct? Is there anyway to avoid this? How often/in what time frame does a mic like a U87 reveal the wear and tear of time in recording quality? Or is it possible that time "ages" a diaphragm like wine? (Could it be that vintage mics didn't sound as good new?) Does anyone know?