You are in no way a necessary evil.  I ma sure you think you are, because it makes you feel special and justifies your behavior, but you are in no way a necessary evil.

You are part of the bipartisan rot in this country, where it is ore about proving how smart you think you are, to how not wrong.  I say not wrong, because people concerned with being right tend to be better at interacting with people.  It is about your ego.

If you were even 1/8 as smart as you think you are, you would realize that this college sophomore home for break, trying to piss off his conservative dad persona does not make people particularly receptive to your pint of view.  In fact, it entrenches them more inn their view, and makes them less likely to take your viewpoint under consideration.

So... if you are not trying to convert people to your idea, then you are just doing it to stroke your own ego.  A common practice on the internet,and society as a whole.  It is kind of why are discourse is breaking down.

If the necessary evil is common, and doing harm.  It is not necessary, just evil.  Though it may be a banal form.

I don't think you started this thread because you wanted to know what was going on, or why people were not posting.  I think you missed arguing, and having an undeserved sense of superiority.