Oliver Queen is not Clark Kent, as evidenced by the very first episode, when he doesn't hesitate to kill a man in order to protect his secret identity.
Sure, he likes to give unsavory characters the chance to make amends for their crimes, but if they dare cross him again, he's not a merciful enemy. His priority is to prove that his father, who killed himself so Oliver could live and right the family wrongs, did not die in vain. He takes it all very
We do see the softer side of Oliver when he's with what's left of his family and friends, as he struggles to reconnect
with the world that kept turning while he was gone. He's damaged and plagued by PTSD, and the writers have gone to great lengths to make him extraordinary, but keep him human. It makes for a lead character who is extremely flawed but absolutely worthy of investing in.