That assumes that these hypothetical beings are made of matter and not pure energy. It could be that these beings are energy "parasites" that consume energy dir

That assumes that these hypothetical beings are made of matter and not pure energy. It could be that these beings are energy "parasites" that consume energy directly from stars. They may even be an artificial intelligence that seeks to saturate the known universe, in which case a planet is unnecessary and even inefficient for their real estate. Maybe they just want to construct more interstellar data centers to propagate ;)