"Do I have to answer that?"
Miss Twilley blushed. The effect was far more startling this time.
Lyf smiled with an air that would have been infuriating in a human but was somehow appropriate for a Devi. Miss Twilley sighed. At least that worry was removed.
"Perhaps I should give you a short synopsis of Devian society," Lyf said. "It's not like yours. Millennia ago our culture and technology evolved to the point where individual needs could be satisfied effortlessly. As a result we were compelled to consider group desires. Modern society on Hel is composed of enclaves with a community of interest plus certain ancillary groups that support them. The task of satisfying the desires of an enclave is infinitely more complex than satisfying an individual, which gives our civilization the necessary stimulus to progress.
"One of the reasons we deal with your world is to provide us with things impractical to produce upon our own. Another reason is amusement. If only you humans were not so savage we could perhaps arrange tours of Earth to observe you in your native haunts."
"Is that why—" Miss Twilley began.
He shook his head. "No—the importation of humans for ethnological studies has long since become a matter of interest only to highly specialized enclaves. That subject has been exhausted for popular satisfaction. We have tried to import other species, but they do not thrive on Hel, and it takes a great deal of trouble merely to keep them alive. However, your race adapts so readily that even your cultural variations disappear in a few decades.
"It was this early importation and your ability to survive that has placed your race in such demand. It is unfortunate, perhaps, that your species cannot reproduce on our world, but the inhibitors we use to regulate our numbers also affect yours. Naturally, we can't risk a population explosion merely to reproduce your race. So we obtain more of you when necessary."
"Why?"
"Consider for a moment what might be valuable in a civilization that has no basic needs."