Lets say we have the capability to create living creatures and some bored scientist makes one that is relatively intelligent (enough to be considered a person in a meaningful, human definition), capable of language, requiring of little sustenance, capable of reproduction and completely and utterly happy except under to most terrible circumstances. Would the utilitarian view of the situation be to convert all usable resources to create habitats for these critters? Would the moral thing be to give the world over to them because they're better at not making each others lives terrible/are happier for the same amount of resources?

I'm pretty new around here so please forgive the sheer newbishness of my question.