A message to the rest of the world:
I know you may think America is crazy (and we are) but you should know that Trump voters are currently a very small portion of the population. About 30% of the country identifies as Republican (eligible to vote in most Republican primaries/caucuses), less than half of those actually do (30-45%), so call it 50% to be generous, and that makes 15% of the population voting. If we take all four states so far and say about 40% of those voted for Trump (again generous) that means about 6% of the US population is voting for Trump at this point when you extrapolate that to the primary/caucus season being finished and all states voted.
Now we will see how many votes he gets in the general election, but we haven't all gone off our rocker.