 Based on the information in the text, why would Don choose to leave Superior?
Printed in U.S.A. THE CITY THAT RAN OFF THE MAP Radio messages stated simply that Superior had seceded from Earth. But Don Cort, stranded on that rising town, was beginning to suspect that nothing was simple about Superior except its citizens. Calmly they accepted their rise in the world as being due to one of their local townspeople, a crackpot professor. He had been highballing west along Route 202, making up for the time he'd spent over a second cup of coffee in a diner, when he screeched to a stop. If he'd gone another twenty-five feet he'd have gone into the pit where Superior had been. He backed up two hundred feet, set out flares, then sped off to a telephone. The state police converged on the former site of Superior from several directions. Communicating by radiophone across the vast pit, they confirmed that the town undoubtedly was missing. A pilot who flew over it reported that it looked as if a great ice-cream scoop had bitten into the Ohio countryside. The train's schedule called for it to pass through but not stop at Superior at 11:58. Someone pointed out that October 31 was Halloween and that midnight was the witching hour. A National Guard officer volunteered to take a jeep down into the pit, having found a spot that seemed navigable. The Governor of Ohio asked Washington whether any unidentified planes had been over the state. The Pentagon and the Atomic Energy Commission denied that they had been conducting secret experiments. A United Airlines pilot found Superior early on the morning of November 1. The object loomed out of a cloudbank at twelve thousand feet and Studley changed course to avoid it. A few minutes later he had relayed a message from Superior, formerly of Ohio, addressed to whom it might concern: It said that Superior had seceded from Earth. One other radio message came from Superior, now airborne, on that first day. Don Cort had been dozing in what passed for the club car on the Buckeye Cannonball when the train braked to a stop.
 He had to deliver the handcuffed briefcase.
 He had to deliver the handcuffed briefcase.  He had a family to return to that would be expecting him at home.  He feared the future of Superior.  His wife would not appreciate him spending time with Alis.