I have a lot of trouble accepting MBTI.
However I can accept it as metaphoric.
And indeed the metaphor of introversion and extroversion is known across the world.
And so it is a useful metaphor.
But if we accept MBTI as metaphoric, we then must accept its limitations.
And the first limitation is that metaphors are not literal - they are, for instance, not literally true.
And you might even go further and say a literalist interpretation of MBTI is Fundamentalist.
And the second limitation of metaphors is that they can't be taken very far.
If you take them too far, they become absurd.
And of course it is this absurdity that the Fundamentalists and the Literalists are fighting off.
But they can only fight absurdity off by turning off their critical faculties and ignoring evidence.
But at a deeper level, they just want to feel good - 'cause oddly enough they think that if they feel good, they are good.
But fighting off - and continuing to fight off absurdity - is dispiriting.
And the unconscious knows that fighting absurdity is hopeless. But with the cognitive faculties turned off, the unconscious can only speak to us through our emotions.
So our unconscious has no alternative but to speak to us through depression.
And this is why we just want to feel good, because deep down we are depressed.