Answer:
The narrator had decided to quit baseball because of the simple fact that it just didn't interest him anymore. In the text it says "I used to love baseball, I really did" It also says "The older I got and the better I got, however, the less fun it became. I realized we weren’t so much enjoying the game anymore as tracking my batting statistics and analyzing how I could perform better to draw the attention of talent scouts." Those two excerpts really show that he grew out of it and found a love in theatre and not baseball.
Explanation:
