A world without extra food: The not very distant past.

While reading Tom Holland's The Forge of Christendom: The End of Days and the Epic Rise of the West, I was struck once more with the realization that most of modern humanity has no real notion as to what life was really like only a few short generations ago before the food surpluses we enjoy came to be following the Industrial/Agricultural Revolution.  Our ancestors lived season to season.  Every spring was a time of want, last year's harvest having been exhausted and this year's produce not yet available.  A single bad harvest could throw a family, a village, even an entire region into famine and starvation.  Is it any wonder that a people living such a precarious existence, while having faith in God, were still superstitious as they looked to the heavens and prayed that nothing would destroy their crop before the harvest?
Famine still exists in the modern world, much of it the result of human malfeasance, but weather related disasters still occur that threaten once more to plunge people into hunger.  There is a profound difference, however, between modern hunger and its past manifestations.  When hail, locusts, or a band of marauders ruined the harvest in 10th century Francia, 12th century Bavaria, or 14th century Ireland, there was no outside help to come to the rescue.  The U.N. did not exist to send relief, nor did international charities, or friendly foreign governments.  We still have humanitarian crisis in our world, and they still do spiral out of control at times, but a possible solution to them always exists.  There is enough food in the world to feed everybody, our ancestors couldn't imagine such abundance.
If you know history, you learn perspective, if you have a reality based perspective on the world, finding wisdom is far easier.  Is life difficult now?  Yes.  Do people suffer in the Third World and in even rich nations?  Of course.  Understanding that things were worse, significantly worse, in the past doesn't minimize the suffering of the present, but it does remind us that gratitude ought to be near to our lips far more often than grumbling.  There are a lot of people who don't know what they will eat tomorrow, but gone are the days when nobody could prevent starvation following a bad harvest.  Shouldn't we be a people who don't have to be reminded to offer up thanksgiving to God?