question:  What is the reasoning behind Gwayne’s decision?
context: They were something more—and something less—they were, in short, humanity's hopes for survival! [Transcriber's Note: This etext was produced from Worlds of If Science Fiction, September 1961. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Captain Gwayne cursed and rolled over, reaching for his boots. The starlanes between Earth and her potential colonies were rough on the men who traveled them now. Gwayne swore softly to himself. Earth couldn't turn out enough starmen in the schools, so promising kids were being shipped out for training as cadets on their twelfth birthday. The two he'd drawn, Kaufman and Pinelli, seemed to be totally devoid of any sense of caution. But something had happened to the exploration party fifteen years back, and to the more recent ship under Hennessy that was sent to check up. The Sol-type sun must be rising, since there was a dim light. Even the deep gorge where they'd found Hennessy's carefully buried ship was completely hidden by the fog. Gwayne stared at them for a minute, trying to read sense into the things. Earth had ordered him to detour here, after leaving his load of deep-sleep stored colonists on Official World 71, to check on any sign of Hennessy. It was too far to see clearly, but Gwayne grabbed the microphone, yelling into the radio toward the cadets. Young Kaufman grabbed at Pinelli, and they swung around together. One seemed to be almost eight feet tall, leading the others directly toward the spacesuited cadets. One, at the front, was stuttering into life, and Gwayne dashed for it as the exit port slid back. At a gesture, the jeep rolled down the ramp, grinding its gears into second as it picked up speed. Then Gwayne spotted them; surrounded by the menacing horde. A spear crunched against the windshield from behind, and Gwayne caught it before it could foul the steering wheel.
output:  Earth is struggling to find suitable colonies, and this planet has proven to be livable despite the drawbacks.
options:  They can take the information they learned to improve conditions on Earth.  Earth is struggling to find suitable colonies, so they need to rescue the people here and keep looking.  They can bring more people to this planet to live.  Earth is struggling to find suitable colonies, and this planet has proven to be livable despite the drawbacks.