It sure was. I didn't vote for Cruz in the primaries, I didn't vote for Trump either, or Jeb Bush. I have never voted for the candidate who became the nominee. Exceptions are Ronald Reagan and President Bush42. I voted for President Reagan in the primary when he ran for reelection in 1984, and for President Bush when he ran for reelection in 2004.
I will vote for Trump in November and might vote for his reelection in primaries in 2020 if I am still around and if he runs for reelection.
One thing that turned me off about Cruz was his voice, which I found very unpleasant