Connecting an external display to your MacBook offers several benefits. Firstly, it allows you to work on a larger monitor, providing more screen real estate for multitasking and increasing productivity. With an external keyboard and mouse, you can use your MacBook in a closed clamshell mode, turning it into a desktop setup. Having two displays can also enhance your workflow, allowing you to spread your work across multiple screens for efficient multitasking. Additionally, an external display is great for watching movies or delivering presentations to a larger audience. It provides a more immersive experience and allows for better visibility.