Who told you that the world should be free from suffering?
Do you find any value in suffering?
Do you think it is possible to experience all the beauty and goodness and pleasure the world offers without also experiencing the bad? Isn't good only good because we know what bad is? If there was only good would it really be "good"?
If you where God and could eliminate suffering what would the world look like? Or conversely if there was a loving God what should we expect the world to look like?