I don't want to restrict the life of a play to a particular production. The original actors might leave after the first six months, and I want the play to last 30 or 40 years. You write for the character, not the actor on the stage.
I go to see plays all the time, and whenever I see Chekhov, I'm amazed at how this Russian play strikes home to me living 100 years later in New York City. I'm drawn to him because of his way with characters and their relationships with each other.
I don't like losing the words, as you have to, when I'm asked to turn a play into a movie. It's not a matter of ego . . . I'm just better able to create the character for an audience through words rather than through actions.
A lot of your personality is formed before you're 12, obviously, but only a few of my plays use characters from my childhood. The more mature plays are affected only by my adult experiences.