“How can someone donate hundreds of thousands of dollars to the Kasich presidential bid and not feel very, very stupid right now?”
So they can use Kasich for a mouth piece to attack Trump. They know that Kasich can’t win but that doesn’t matter.
Some of this is likely rooted in the fact that Kasich is rumored to be a vindictive SOB and they are going to have to live with him as Governor for some time to come.