Trump, in my opinion, is like a "practical joke" which got out of hand.  At first it seemed harmless and funny......Oh sure, Donald Trump as President....yeah, right.  However, his candidacy is no longer merely a harmless joke.  There are, apparently, tens of millions of Americans who actually believe Mr. Trump would benefit our nation as President.  They've listened to him over the past year or more, they've seen and heard his gaffes and bizarre proposals (surely, even the most ardent Trump fan recognizes the Wall proposal as bizarre),  They're not bothered by his lack of understanding of national and international issues. They eagerly accept his egotistical mantra "I'm Donald Trump and I will take care of it.  I will Make America Great Again."  

As a child I found the Circus Midway spiels of the barkers and snake oil salesmen entertaining and amusing.  The very real prospect that someone like Donald Trump could be President is neither entertaining nor amusing....just a little scary