It is absolutely "OK" and increasingly common for adults to watch cartoons, as the medium of animation has evolved far beyond children's entertainment. In 2026, the "animation for adults" genre is a multi-billion-dollar industry, driven by sophisticated storytelling in shows like BoJack Horseman, Rick and Morty, and Arcane. These programs tackle complex themes such as existentialism, mental health, political satire, and intricate sci-fi concepts that are often more "adult" than live-action dramas. Furthermore, many adults watch "all-ages" animation (like Pixar or Studio Ghibli films) for their high artistic merit and emotional depth. From a psychological perspective, watching familiar or high-quality animation can serve as a form of "restorative nostalgia" or stress relief. The stigma that animation is "just for kids" has largely vanished in modern culture, replaced by an appreciation for the limitless visual creativity that animation allows—creative risks that would be physically impossible or prohibitively expensive to achieve in a live-action format.