Once you start to build something complex, you'll find have a well tested, reliable library to help manage the data and update the UI for you is tremendously va

Once you start to build something complex, you'll find have a well tested, reliable library to help manage the data and update the UI for you is tremendously valuable. Another benefit of using a framework (especially a popular one) is it makes hiring / onboarding easier - a lot of candidates will already have experience with React / Vue / Angular.