A pair of bank robbers are nabbed red-handed by police. What he means is that he and his companion are not satisfied with the earlier take and are after a larger haul. They have given little thought to how they will spend the proceeds. It isn't the money itself that is important but rather the excitement of knowing that they can pull off a really big score. Like these men, many a thief has given little thought as to how to dispose of the loot.
Criminals constantly complain about being broke.
This is because they spend or give away the proceeds nearly as soon as they acquire them. The common motive behind many crimes that appear senseless is kicks - the thrill of doing the forbidden. There is excitement in thinking about crime, bragging about crime, executing the crime, making the getaway, and celebrating the triumph. Even if the offender is caught, there is excitement in dealing with the police, in trying to beat the rap, in receiving notoriety, and, if it gets that far, in the trial proceedings. But I believe we must conclude, they made a wrong choice, and they rebelled against any and all good influences and training they had.