After your characters are fleshed out and you have breathed life into them, you live with them, talk to them, laugh and cry with them. They become your family as you sit at your computer hour after hour honing and shaping them. Is it any wonder that writers often walk around smiling to themselves, or daydreaming? Instead of daydreaming or smiling for no apparent reason, they hold conversations with their characters, watch them interact with each other or get into scrapes. Writers observe people around them to glean ideas for their stories.
Does that mean that every writer is an introvert? Not at all. Some writers may be introverts, silent observers, while others may find balance in their lives by socializing. Writers are people with a talent and passion for writing, just like someone else who may have a talent for cooking or gardening or fixing things, etc. The difference is that a writer’s art is a lonesome one. Nobody sees the finished product until the story hopefully gets published.