Am I not free to do as I wish with my own money?  Imagine the following impossible scenario:  you walk into a car dealership and say, “I want to buy one of your cars, but I only have five dollars.”   Then the dealer hands you the keys to a brand-new Mercedes- Benz and says, “It’s all yours.”   You stand there in complete astonishment for a moment.   Then you ask the dealer, “Why did you do that?”   And the owner says, “I’m so rich that I just...