When Gordon Gekko, the main antagonist in the 1987 film “Wall Street,” declared in no uncertain terms that “Greed is good!” people flocked to the theaters. And cheered. Please don’t base your belief system on a movie line that might have been memorable and entertaining but is dead wrong. Greed is like cancer that, when left untreated, can destroy individuals, families, businesses, governments, and economies. Greed makes financially ignorant people putty in the hands of the consumer credit industry.