Manual testing remains essential because automation cannot fully detect usability issues, confusing workflows, visual inconsistencies, or real user frustration. While automated testing improves speed and efficiency, human testers help validate actual user experience, exploratory scenarios, and edge cases that scripts often miss. Modern QA teams use both manual and automated testing together to build reliable software. Reference: https://keploy.io/blog/community/why-manual-testing-matters-a-ultimate-guide-to