Gilgamesh is certainly an epic hero!  Aside the described 2/3 God and stronger than any king alive; He was a hero for demonstrating a skill set of intelligence, valor, respect for death.

Are there any comparable figures in literature or life?  I would have to say, yes!  If we only took a better look in literature or with ourselves, you too can find the same spirit of Gilgamesh within us, and for this reason you should preserve this figure in Mesopotamian mythology and folklore.