> Some realities cannot be reduced nor should they be reduced to analogies like "hive". Our social reality is irreductible being the most complex one known.

I don't understand how that has any bearing on whether human society can form hive minds or hive mind like entities.

> Hive mind as an emergent property still implies a common thing for which one lives. Or a queen. A peer that is one's reason to live.

No that is absolutely not what a hive mind is. A hive mind is a collective consciousness. That's it. It says nothing about the objectives or agency of it's parts.

> We are all different and it is not because a person one talks with does not express a different opinion does it mean he thinks the same.

You seem to be laboring under the apprehension that a hive mind supplants the consciousness of it's parts. That may be the case for certain hive minds, but it is not a necessary feature. A hive mind can just be an emergent property of individual minds that are strongly connected but still retain agency.