Hamlet's Hamartia

After reading Hamlet I've realized that he has a strong hamartia that thwarts his existence. His hamartia is that he is ambiguous about his decisions. Had he killed Claudius when he had the chance he would've spared the lives of many characters in the play and his own as well. However, Hamlet cannot bring himself to kill his uncle even though his plans for revenge are so prevalent throughout the story. If he wasn't so wishy washy with his feelings he could've ended the problem by killing Claudius to begin with. His ambiguity continues to plague him throughout the play because he doesn't know what he wants to do with Ophelia. One moent he loves her and another he wants to get rid of her. Maybe its his madness that makes his so unsure about his decisions, but had he treated Ophelia well and respected her he might've had help with his plans. He doesn't even know how to feel about his own mother. He loves her but constantly thinks she is a whore and this possibly causes a ripple effect in all his female relationships. In retrospect this certain hamartia proves to be his biggest adversary, not Claudius.