I believed that it was quite clear from context what I meant by "politics." It should be obvious that I was not talking about all forms of social organization, as in "office politics." I don't believe it's reasonable to believe I meant that all social interaction should be avoided, but when several people claimed to take this interpretation, I was very clear about the definitions I was using.
> By your understanding of politics, only governments and those participating to elect/support them are political entities.
Yes, that is correct. This is also, to my knowledge, the standard definition of the term outside of obvious casual adaptations of the term like "office politics."