Okay, many of you have discussed how the flood is just like a virus or mindless drone which doesnt make them a society. I wil say that you made some very logical points, especially wonder wombat. They dont seem to have a legitamit "society" or culture, which does not make them a utopia. But after thinking about this situation, i realized that there may be much more to this than i had earlier anticipated
allow me to reference some halo fiction. It is extremely implied that the flood and precursors are of the same species. Though the origins and specific connections are unknown at the moment, it can easily be supported by evidence from the text. anyways, in order for the flood and precursors to be of the same species, either the precursors would have to evolve from the flood, or the flood was evovled from the precursors. Its unlikely that the precurosrs evolved into the flood, because the flood was discovered in the form of a powder. so it can be reasoned that the precurors evolved form the flood. In order for that to happen, the flood would have had to infect all of the life in a previous galaxy and began evolution from there. They eventually became the most powerful and advanced beings ever known in the halo universe. they surely had a form of society and organization in order to begin creating all of the other life in the galaxy. So eventually, the flood can evolve from a parasitic state into an independent society under the right conditions.
i wanted to point that fact out to show that flood almost certainly has a state of being a true society once it can develop. If you disagree woth any of my information, i'm reading to discuss some facts. also, if you want more clarification about the general process of evolution, i would be happy to explain.
*note, do not turn the topic of evolution into a relgious discussion. If this helps clarify, the Catholic church has already accepted evolution years ago