We shan't perform procedures that may harm the subject. Yet, we shall study the subjects. The accomodation, be clear, will conform to what your species may call "humane"; indeed, captives shall receive all comforts, and may live most freely among our members, as prized guests of honor.
Consider thy reality on Earth: thou art alone, lost; hast no hope of returning to what you may call home. Acquiesce abduction by our vessels, and we shall give thee a new loving home, for a meager price of knowledge.