I think that Trump would be awful as a President. While I could grind through my ideological, moral and philosophical disagreements with him, my main practical concern is that he would simply be rather bad at the job. The first reason is that he has no experience in political leadership. While he has run a business (with many failures), being a business leader is rather different from being a political leader. To use an analogy: I have years of experience teaching philosophy but this does not qualify me to teach, for example chemistry or even a subject closer to philosophy such as history. The second is that Trump has not presented any developed plans or proposals and the ones he has advanced are patently absurd. The third is that Trump seems to lack even a basic understanding of critical matters such as international law, international events, the rules governing the military and so many more things. While Trump makes sweeping claims that bring cheers, he does not seem to accept that he is making claims that are untrue and while not logically impossible, are practically impossible. In sum, Trump is not qualified or suitable for the office.
As much as it pains me, Trump does deserve some praise for what he has managed to do. First, he has made the Republican party live what it has become, in full view of the voters. Second, he has launched a successful campaign against the political establishment by appealing to the people. While I disagree with Trump, it is good to see a complacent political machine knocked off balance. If only we could see something similar happen to the Democrats. To be fair, Bernie has been trying to kick the machine and I think it might have shuddered just a bit.
Third, he has captured a bolt of the lightning of American anger and fear; thus giving voice to the rage of those who have long been ignored. I think that he is getting people to turn the right anger in the wrong direction, but he speaks for those who have been effectively abandoned by the current system to a degree that none of the other Republicans can match.
Fourth, he has energized American participation in politics to a level that has not been seen in a long time. Currently, he has energized the Republicans but there is a chance he will energize Democrats and Independents to vote—most likely against him. He has made more people care about politics and has even, I must concede, made people believe that it is worth getting involved. While I certainly hope that he does not succeed, I must commend him for getting so many out of the pit of apathy that has become the norm in American politics.
It is worth considering that Trump does not deserve much credit for this. It could be that people were ready to reject the establishment and motivated to become politically active and Trump just happened to be the guy that got the attention. That said, somebody has to be the guy (or gal) that the voters rally behind. Trump is, no matter what one might think of him, that guy.
It has been claimed that Trump cannot beat Hillary or Sanders; that the polls show he will lose in the general. As others have pointed out, Trump was never supposed to get this far. So it is unwise to count him out. Trump actually does have a path to the White House.
First, Trump needs to keep the remaining candidates in the race so that they keep splitting the vote. If he can do this, he is likely to keep ahead of all the others. Second, Trump needs to be ready to fight it out at the convention. If he does not get the automatic win, the Republican establishment might try to rob him—which would be a disaster for the party in many ways. Third, Trump needs the usual low voter turnout among those who are likely to vote for the Democrat. While Sanders has an enthusiastic group of supporters, they tend to be the folks who are not reliable voters. Also, to be honest, neither Hillary nor Bernie are really lighting the base on fire—though Bernie does have some devoted folks. So, there will probably be the usual weak turnout of Democrats—unless they are set afire by fear of Trump. Fourth, Trumps needs a high voter turnout among the folks who will vote for him. Trump does not need to win a majority of registered voters—he just needs a majority of the minority who actually vote. Trump can, I think, do this—he has enthusiastic supporters who have turned out to support him. They will almost certainly vote in the general election. Put simply, Democrat apathy + Trump enthusiasm= President Trump. As always, the beauty of democracy is that it is the best political system for giving us what we deserve.