What exactly do you mean with "utterly happy"? What's the empiric test to measure whether those creatures are "utterly happy"?
The more I interact with people at the high end of that spectrum the less I think that humans optimize towards happiness.
Child-like joyousness was what I was envisioning. The short story Paprika http://escapepod.org/2014/05/30/ep448-paprika/ ends with all humans long dead and the only remaining human creations are talking squirrels that, at least according to the story's brief description, live completely care free and joyous lives. That doesn't exactly seem feasible to me with living creatures having resource needs, but what if they lived in-silico rather than in meat? That would still have resource needs, but possibly far fewer.
I think I am unconvinced that the way humans....
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