How would you propose to grow cells without nourishment? This is kind of a ridiculous topic, but I'm willing to engage you. Have you studied any biology whatsoever, much less biochemistry? How could a being without cells have continuity of Self?

What are you proposing, beings of pure energy? Is that your litmus test for a proper creation by a benevolent god?

The differentiation of cells is what allows specialization of tissue to occur. That can't happen with nourishment.

Food is consumed by all life, even simple plants that use their roots to absorb nutrients from the soil.

Are you asking for a barren world devoid of the diversity of species? For without the array of creatures to live and die and so form soil or serve as nutrition for other species, there is no food chain.

Even if a being of energy were possible, how would it maintain cohesiveness? How would it grow? What would limit its growth if not bound?

The topic seems very ilogical.