The world is in better shape then it was between 1914 and 1945.
1914-18 - World War I, 9+ million people die;
1917-early 20's - Russian Revolution, millions die;
1918-19 - Spanish flu, up to 50 million die;
1929-39 - Great Depression;
1920's and 30's - Following Russian Revolution millions die in Stalins' farm collectives initiatives that results in widespread hunger, also in the Stalin purges;
1939-45 - World War II - 55+ million die (including 16 million in Soviet Union I believe).
And that was over a 30 year period.
The world does have a lot of tremendous challenges ahead, especially with trying to balance a growing population (6.6 billion), environmental degradation, and the depletion of natural resources.