Because he is an addle brained gadfly.
I am more interested in some of our so called geniuses trying to figure out what makes him so popular, but then they might have to yield to the citizens they are supposed to serve.
Those people that are so enamored of Trump will vote for someone whether Trump gets the nod or not. So how do you figure you can bring those voters in the fold by calling their favorite an idiot and his supporters morons?
Cruz is not participating in this nonsense and neither should you, just be patient.
But I agree with your overall theme, Trump must have the arc of his rocket flight. I'm on record here as having called the turn before the debate and predicted it would be the beginning of the end of Trump's campaign. I think that is being borne out, the trends seem to indicate that he is slowing, topping and in fact sliding.
It is worth spending time on the Trump phenomenon because conservatism should be a movement of ideas and only secondarily a movement which latches on to an individual no matter how superficially attractive he or she might be. We all have sinned, all fall short of the glory of God and we are all born in original sin. Every candidate in every elected official will fall short somehow, someday. I am not enamored of any candidate, not even Ted Cruz, my support for him is relative to other candidates but I like to think that that support is related to his coherent and consistent relationship to conservative principles. I think it is necessary to point out to those who might listen that Trump does not represent those principles. There are many who support Trump today who will be looking around for an alternative tomorrow.
Cruz is wise not to attack Trump, and it is in keeping with his commitment to Reagan's eleventh commandment not to criticize Republicans. The candidates need surrogates to point these things out on their behalf. That is the role in a campaign of a vice president, for example. We don't have a vice presidential candidate yet, so we're all free to chip in on this forum which exists for that purpose. You too.