Evil and fear and all other bad things must exist because without them goodness and love could not exist. Evil exists by definition: it is the opposite of good. Just like you cannot have tall without short, you cannot have good without evil. It is an impossibility to create a world completely without evil unless God would be willing to sacrifice the virtues of goodness and love. I think we could agree thata life that includes evil and suffering along with goodness and love is preferable to a life without either.
