HAVANA, CUBA -- The man behind the wheel of the pirate taxi was tall, good-looking and nicely dressed -- blue eyes, touch of gray at the temples, clean plaid shirt, slacks, windbreaker. Nights get cool in Havana in winter, and I envied him the windbreaker. But that was all I envied.As we drove into a remote suburb in this sprawling city of 2 million, he talked about what is sabotaging Cuba's famous revolution: He talked about how complicated life there has become -- not that it was ever easy."A family of four -- like mine -- can live well in...