I hope you are not going to waste our time trolling on all of the Cruz threads.
I certainly don't intend to; I really like Cruz, but the issue is not "settled beyond question" in my mind -- I have no intention of voting in a manner that would undermine the Constitution (if I had really known about McCain's situation in 2008, I likely would not have voted for him).
In short, I want to have a clear conscience rather than beating myself up about contributing to its degradation.