How do you know? He has a habit of not paying people, which leads to bankruptcy and not being able to pay for necessities including medical care. As a small business, I hate it when I do work for someone and they don't pay, especially when it's often the most wealthy that don't pay.
He also has a history of working with various criminal organizations, including mafia types and before this election, his good friends, the Clintons.
As a non-American, I can't understand voting for either lizard