Why do you think Okonkwo makes the decision he does in the end?

Okonkwo's suicide, in retrospect, seems nearly inevitable. Determined to fight the white man, alone if necessary, the betrayal by his people is more than he can bear. He realizes that he will resist alone, even after the outrage of the white man ordering a stop to the clan meeting. Okonkwo understands that his people have been broken. Instead of a war, he will have only the white man's noose; he will not even be tried under his own people's laws. He chooses suicide instead.