 Why was the Stortulian so determined to make it to Earth?
It was our first day of recruiting on the planet, and the alien life-forms had lined up for hundreds of feet back from my rented office. The aliens came in every shape and form, in all colors and textures—and all of them eager for a Corrigan contract. The Galaxy is full of bizarre beings, but there's barely a species anywhere that can resist the old exhibitionist urge. The name of the planet was MacTavish IV (if you went by the official Terran listing) or Ghryne (if you called it by what its people were accustomed to calling it). His last visit to the Caledonia Cluster until 2937, so don't miss your chance! It's the best of its kind, the only really decent place where Earthmen can get a gander at the other species of the universe. "Before we begin, I'll need certain information about—" "I am a being of Regulus II," came the grave, booming reply, even before I had picked up the blank. We needed a green Regulan in our show; the last one had quit four years ago. A Terraphile alien who goes to the extent of rechristening himself with a Terran monicker would work for nothing, or even pay us, just so long as we let him get to Earth. He was followed by a roly-poly blue-skinned humanoid from Donovan's Planet, four feet high and five hundred pounds heavy. It was the isolationism of the late 29th century that turned me into the successful proprietor of Corrigan's Institute, after some years as an impoverished carnival man in the Betelgeuse system. Back in 2903, the World Congress declared Terra off-bounds for non-terrestrial beings, as an offshoot of the Terra for Terrans movement. Before then, anyone could visit Earth. After the gate clanged down, a non-terrestrial could only get onto Sol III as a specimen in a scientific collection—in short, as an exhibit in a zoo. Every alien wants to see Earth once in his lifetime, and there's only one way he can do it. At the same time, we had turned away a dozen ursinoids, fifty of the reptilian natives of Ghryne, seven Sirian spiders, and no less than nineteen chlorine-breathing Procyonites wearing gas masks. They're gentle and likable beings, but their upkeep runs into literally tons of fresh meat a day, and not just any old kind of meat either. "I happen to be a representative of the only Earthlike race that exists anywhere in the Galaxy but on Earth itself.
 He wanted to find and bring back his wife.
 He wanted to seek revenge on his wife.  He was desperate for money.  He wanted to find and bring back his wife.  He was fearful of his future with the other Stortulians.