Dark mode has become increasingly popular, but research suggests that it may not have the productivity benefits that its advocates claim. In fact, studies have shown that dark mode can actually lower reading comprehension and make people slower and less productive. Additionally, for people with astigmatism, dark mode can be objectively worse than light mode due to the way the eye adjusts to different light levels. However, dark mode can still have some benefits, such as improving battery life on premium devices with OLED displays. Ultimately, whether or not to use dark mode is a matter of personal preference, and users who enjoy its aesthetic appeal should feel free to use it, even if it may lead to excessive screen time at night.