I certainly hope with benefit of hindsight that you don't think so now.
As for Cruz, he is polite and respectful, but he is also determined and steady in what he makes up his mind to do, IMO. He's my first choice.
At the time, however, I thought---based on what many Romney haters said, that he would be so lustful for power he would do whatever it took. Obviously I---and they---were wrong. I do dismiss notions of a "deliberate" loss. Rather, I think he was just another "nice guy" who wasn't willing to do what it took to win the presidency.