If Macbeth was totally and completely ruined, why is he still considered a hero in Shakespeare's Macbeth?

William Shakespeare is an outstanding dramatist who had used the principles of" Poetics" by Aristotle.In Poetics, Aristotle describes about the character of a hero. Hero should be related to aristocratic society so that his downnfall might teach a lesson to others.

Of course, Macbeth is ruined completely, but he is the character to whom the plot revolves. Really he is central figure of the drama.

At last but not least, he is a good warrior and commonder but his over ambitions are responsible for his downfall.

Abopve all, he is the hero of the drama,Macbeth.