1. Energy Saver: Tapping into sunlight cuts down the need for artificial lighting during the day, saving on energy bills.

2. Mood Booster: Natural light is known to lift spirits, amp up energy levels, and even lead to better sleep. Plus, it's easier on the eyes, making for a healthier and happier vibe.

3. Color Pop and Texture Love: Sunlight makes colors and textures pop, making interiors look more vibrant and alive.

4. Outside Connection: It creates a visual and emotional link with the outside world, bringing a bit of nature indoors and boosting a sense of space and tranquility.

5. Green Factor: Using natural light is eco-friendly, cutting down on non-renewable energy use and reducing the environmental impact of artificial lighting.

6. Visual Charm: You can strategically use natural light to highlight architectural features and design elements, making spaces look more inviting and visually appealing.

7. Flexibility and Control: By designing spaces to maximize natural light, you give occupants more control over lighting, adjusting curtains or blinds to dial up or down the brightness as needed.

8. Thermal Efficiency: Besides just lighting, natural light can also help with passive heating in cold climates and cooling in hot ones, cutting down the need for artificial heating and cooling systems and saving on energy bills.

In short, smart use of natural light in interior design not only ups the aesthetics and functionality of spaces but also makes for a healthier, more sustainable, and all-around awesome environment for folks.