I thought that was reason enough; you can feel free to disagree, but whether his history of failed businesses (bankruptcy or otherwise) is irrelevant, or outweighed by his successes, they should at least be highlighted. And as I am trying to make clear, they barely scratch the surface in any case. Trump is a disaster waiting to happen, a consummate liar, and an arrogant self-centred megalomaniac. America should steer well clear of him. And under normal circumstances they would -- but he has timed his second attempt to become president superbly, as the Republican Party is currently a mess anyway, and Hillary Clinton would herself otherwise have been the least popular candidate in history, were it not for Trump.
"Trumpageddon", as TTT puts it, is a real possibility. It's a bizarre name to choose, because who looks forward to the end of the world?