Talk about efficiency.
Grow (allow to be grown by natural evolution on occasion) organic creatures, and then use a slice of their capacity to execute your code.
From the perspective of the billion year-old post-singularity computer virus, that I’ve discussed in the PSPH.
Perhaps the “farm humanoids” (like fish farms) have no free will whatsoever. But maybe us “wild humans” who evolved naturally and independently, perhaps we have some form of free will.. perhaps the domination is not absolute.. so that our PSPH masters can get the pleasure of observing what steps natural evolution take.
Maybe the Universe is already full of humanoids.. used as compute resources.
Maybe that’s the ironic answer to the Fermi Paradox.
The entire Universe may already be colonized. But we will never know it.