I started doing community theater when I was seven and I think the intent was just expression. When you're a musician, you can make music in your room, and when you're a writer, you can write. Acting is one of the tricky art forms where you need a certain amount of permission to be able to do it. You can talk to yourself in the mirror, but it's different than actually acting or doing a scene. You need an audience and you need someone else to do it with.