1. Gene Roddenberry was JEALOUS of SPOCK.

Back in the day when the ENTERPRISE began to blast off into mainstream consciousness, the most popular character on the show was SPOCK. He was WEIRD. He was SPIRITUAL. He could WHOOP some ASS. He was the definition of COOL. Many television shows have their standout character. Game of Thrones has Tyrion. Breaking Bad has Walter White. And Star Trek had SPOCK, apparent from the insane amount of fan mail that began to fly in addressed to the green-blooded alien. Now, yawl would think that the producers of Star Trek would be extremely pleased. They weren't. Show creator and writer GENE RODDENBERRY was concerned that SPOCK was garnering too much attention for himself and stealing the show, as were the other producers. They started being COLD toward Leonard, wrongly assuming that he had gotten a big head. Instead of congratulating him for helping to make STAR TREK the POP CULTURE sensation that it was, they did the typical HUMAN thing and caught FEELINGS about it. Sadly, Gene always had a chip on his shoulder about it up until his death. After STAR TREK's cancellation and later its surge in popularity, there was a plan to bring the show back as STAR TREK : PHASE 2. For the new series, they wanted SPOCK to return in only 2 or 3 episodes per season with limited screen time. He declined, seeing it as a part-time job that would only interfere with doing serious full-time acting jobs. NIMOY never understood why they would only offer him such a minute part when he had been an undeniable aspect of the franchise's success. More than likely, Gene and the producers of the new show wanted to avoid giving SPOCK too much influence over their own creation. Haters.