I was waiting for one sensible person to swing the thread over!
However, there are people in our world who live in just such conditions. The people who live their lives in the jungles of South America do not know what they're 'missing', why would they be sad that they have no running water or whatever. They have never experienced anything other than their own lives.
So it is true that if we were suddenly lobbed into Middle-earth we'd be slightly off balance and more than a little queasy, but that's not really how I imagined the original question.
And as for intolerance,
rimbaud, I have had too many bad experiences in this world to be worried about the intolerance of Middle-earth. (My pessimism really shines through in these threads!)