Empty. Barren. These were the true conditions of the Universe, she thought; life, and variety, and energy, were isolated aberrations. - Stephen Baxter

If, in pursuing this object, we employ our skill in research, not in forming vain conjectures; and if data are to be found, on which Science may form just conclusions, we should not long remain in ignorance with respect to the natural history of this Earth, a subject on which hitherto opinion only, and not evidence, has decided. For in no subject is there naturally less defect of evidence, although philosophers, led by prejudice, or misguided by false theory, have neglected to employ that light by which they should have seen the system of the world.

“No. You are wrong. These structures are alive.”
“What?”
“By any reasonable definition of the word. They can reproduce themselves. They can manipulate the external world, creating local conditions of increased order. They have internal states which can change independently of external inputs; they have memories which can be accessed at will…All these are characteristics of Life, and Mind.

It is of course a truism that all logically possible universes must exist.