There are also folk that think their favorite brew might be forced off the market by government regulations. I know lots of folk that run 10W-30 in their cars and trucks specked for 5W-20. Some run XW-40 and even 15W-50 in these same engines. When these engines run with better than EPA fuel economy, no consumption or leak/seep, and run these engines for very high miles, they are not going to change.
Our local Walmarts get oil shipments on Thursday night. There is usually someone at each of our local 4 stores, early Friday morning, that buys the entire shipment of Valvoline full synthetic MaxLife and Mobil 1 15W-50, IN THE QUART BOTTLES.
To sickness, and compulsion, you also have to add paranoia. I have to get it, hide it away, before it is all gone.
Fortunately, I am not one of those sick, compulsive, paranoid people, but I must go now and rotate my stock of quart bottles of M1 15W-50.