I see what you're saying from a human's subjective point of view. If aliens from Tralfalmadore were to adopt the same values, they might choose to experiment o

I see what you're saying from a human's subjective point of view. If aliens from Tralfalmadore were to adopt the same values, they might choose to experiment on humans because - humans don't live as long as Tralfalmadorians - humans don't mourn each other the same way Tralfalmadorians do, and these humans couldn't anyway because they'll all be dead soon - in nature, humans typically die violent deaths anyway, so lab humans aren't suffering worse than a wild human would - humans don't get sick and suffer for as long as Tralfalmadorians do - humans can't predict their expiry date like Tralfalmadorians can