A better question might be why do you think Trump would make a good president? He has absolutely no elective, appointive, or military public experience … zero. He has no track record at all.
Why is it important to have "elective" experience? I understand it may help get you elected, but once you're elected, what purpose does it serve? On "appointive" experience, he probably has more than most politicians. He has to pick the right people for the job all the time and his success depends on it. On "military" experience, which Obama and Hillary also have NONE of... that's why presidents have Secretaries of Defense. We can list all the past presidents who had no military experience, some of them were considered "exceptional" presidents.
No track record as a lying-ass politician who blows smoke up our ass and tells us what he thinks we want to hear? GOOD! Sounds like exactly what this country needs!
So your argument is he has to be better because he has no applicable experience coupled with almost zero knowledge of how government works. Based on Trump's knowledge of government and experience, he wouldn't even hire himself for the job.
Did you ignore the post I posted talking about his leadership skills and how that makes him the most qualified candidate ever?
Trumps leaderships skill are that of a CEO in the private sector which has almost nothing in common with the skills needed by the President of the United States.
A CEO has almost unlimited control of the organization and his success is measured in financial terms. A president has limited control of the executive branch and no control of either the legislative or judicial branch and his success is judged in political not financial terms.
Where a CEOs behavior in his private life is of little importance to his success, a president's private live is a major factor in his success.
What a CEO might do in order to close a business deal could get him impeached as president.
A CEO's planning, organization and management skills are of course of value however the president's job goes far beyond that. Like most CEO's including Trump, the lack of knowledge and experience in dealing with legislation, operation of government, foreign policy, the military, economic policy, governmental financing and budgeting, constitutional and legal issues, and media relations are show stoppers. Granted no president has all these skills but for a president to have none would be a disaster.
I suspect that Trump's knowledge of the operation of government is limited to a high school civics class and regulatory agencies he has dealt with in his business.