"It's Such A Beautiful Day" is a science fiction short story by American writer Isaac Asimov.
When the Door that transfers him from home to school fails, Richard "Dickie" Hanshaw takes a dislike to the method and starts to wander outside in the unfamiliar open, exposed to the elements.
When he catches a cold, Mrs. Hanshaw is horrified and takes him to see Dr. Sloane, a psychiatrist, afraid that her son's wanderings are signs of a mental abnormality.
Despite his own misgivings, Dr. Sloane invites Dickie to go for a walk with him in the open, and Sloane learns to understand and appreciate the boy's dislike of moving around by matter transference and his newly acquired interest in the open air.
Dr. Sloane advises Mrs. Hanshaw not to disapprove of Dickie's odd hobby so heavily, to treat it as if it is no big deal.