Kitchen lighting usually provides enough visibility. An overhead fixture or ambient light from nearby appliances is often sufficient even during late-night snack runs. Adding a light also introduces a small energy draw each time the door opens, and the specialized components must remain durable in freezing conditions. As efficiency standards tighten, eliminating even minor energy use helps manufacturers meet regulations and keeps operating costs low.
Ultimately freezers are designed for one primary purpose: keeping food frozen. A light would slightly complicate the design, increase cost, and add a small energy demand for a feature most people use only briefly. The dark interior is a deliberate choice that balances practicality, affordability, and efficiency rather than a forgotten detail.
