Post the Twentieth - who exactly is mad?

Not me, sir!  I denies it, I does!
I am not mad, I am possessed.  Does being possessed make me mad?  What is mad?
Mad, or, being more PC (we all know that I am that, really), having a 'Mental Illness', seems to mean, so far as I can tell, thinking, acting or being different to how society likes to portray itself.  To stand out and not to accept societal norms as being normal.  therefore, being possessed is being 'mad', because 'society' tells us that possession does not exist, it is all in our heads (well, some of it is, but it fills all other parts of me as well, different story, some other time maybe).
Well, let's stick with possession, shall we?  The same story can be said for most, if not all, of our 'mental illnesses' - Aspergers, ADHD, OCD, terretts, paranoia, split personality, whatever.  But let's stick with possession.
I am 'mad' because 'society' does not believe that possession is possible.  We've gone beyond that, only primatives who didn't have the benefit of science, medicine, Big Brother, Gulf War Syndrome, the national Lottery and bans of fox hunting were stupid enough to believe in possession.  OK, let's stop there.  What is being said is that in 5,000 years of human history (don't get me started on this, let's just accept that as a simple figure, simplified, not true, but let's keep this simples, ok?), possession has been accepted, only the last, what, 5% of that time, has possession been thought of as a 'mental illness' and not a fact.  So, at least 95% of history has been lived by people who were, mostly, mad.
Hmm.
But today we are enlightened and soooo much better than everyone else.  Ipods, suicide bombers and fat Americans on rollerblades, proves we are so much better than Aristotle, Newton and Jesus Christ.  But the facts are that wrld-wide, possession is still seen as fact by a very large, probably a majority, of people.  It is simply accepted in most rural communities, through-out Africa, India, Indonesia.  Throughout the Islamic World (well, it would be, wouldn't it?  If you sup with the Devil you'll get to know him in time).  And by me.  So, most people alive today are probably mad.
Hmm.
Problem here.  'Mental Illness' is seen as not accepting societal norms.  Those who reject possession are a minority.  By their own definitions, they are the ones rejecting international norms, so they must be mad.  All those trying to treat 'mental illness' are, by there own definitions, throughout history and world-wide, in a category of 'the mad'.
Unless they limit these societal norms to just being the liberal, non-religious (in any serious sense), educated West of Europe, North America, Australia and very little else.  And ignore the minority communities in these countries which still recognise possession.
rather arrogant?  Bit of a Napoleon Complex at work, possibly?
And refuse to accept the other views as true, other than in the patronising 'well, we know it's true for you' kind of way.  In denial as well, you think?  Somewhat paranoid, into the bargain?
Certainly sounds like a 'mental illness' to me - but then, Western, liberal PC-bollox nations, and their TV-addled, food-poisoned and bank-controlled populations are sick, terminally sick, an likely to become extinct in the near future, so mental illness is possibly the least of their worries - moral cowardice, fear, and terminal stupidity (not to mention their bodily health) will most likely see them removed from the face of the planet soon enough, and good riddance.
Here's to a happy, possessed future for mankind!