People seldom work at crime. Criminal acts involve short-range choices, that they tend to occur on the spur of the moment. Most criminal actions are brief in duration. The rewards are small, and fleeting. They are also immediate.
Most crimes are easy to commit and very simple in design.
Most criminal acts are exciting. Because of their genetic makeup, born criminals could not restrain their violent and animalistic urges. Because their criminality was not their fault, born criminals ought to be treated as kindly as possible. Criminals lacked strength and weight and they were of low intelligence. Perhaps genetic aspects of the nervous system play a role.