Maintenance keeps a sports car's braking, tire grip, steering response, and powertrain operation close to their intended condition. Wear or neglected service can change the qualities that made the car enjoyable in the first place. Maintenance is therefore part of performance ownership, not simply a way to keep the bodywork presentable.
The right plan depends on the exact model, its age and condition, and how it is used. A lightly driven weekend car still has time-based service needs, while circuit use may add preparation and inspection requirements beyond ordinary road servicing. Follow the relevant manufacturer guidance rather than applying a single interval to every sports car.