“The direction in which he wants to lead is of greater concern to me than how good a leader he is, and I don’t trust him on that.”
Please explain what direction he’s talked about leading us that worries you? Maybe can allay your fears.
In short, I think he's a "big government" guy. I do not like his aggressive support for subsidies, he supported the auto company bailouts, he said that the goverment should pay to ensure that everyone has health care, and he opposes entitlement reform. Maybe that's the direction you'd like to see the country go, but I don't.
He also doesn't seem to grasp the difference between private entrepreneurship, and the goverment getting into business for itself. He said that the government should take a percentage cut of the Keystone pipeline oil ("10, 15, maybe 20%") if it is built. He's also made similar noises about defeating ISIS and then "taking the oil". Uh, no. The U.S. conquering parts of the Mideast to take the oil also is not the direction in which I think this country should go.
Again, you may feel differently.