Me, personally, because I don't even have a futures account at a broker that will let me take physical delivery, nor do I have any experience whatsoever renting

Me, personally, because I don't even have a futures account at a broker that will let me take physical delivery, nor do I have any experience whatsoever renting tank space at the Cushing facility (which I didn't even know existed before today). But I guess the answer to my question seems to be that the cost of storing one contract worth of oil will, unbelievably, be more than $20,000 for the month.