Wicked are important

 Zohar (Shemos 20b) As thorns are scattered among the lilies, so does G-d permit in His world the wicked to be found among the righteous, for, as without the thorns the lilies could not exist, so would the righteous go unrecognized in the world were it not for the wicked, as R. Judah said: “How are the righteous recognized? By contrast with the wicked I If it were not for the one, the other would not be known.