Deleting branches after merging features or completing work is essential for maintaining a clean repository structure and organized Git workflow. As the creator of CoreUI, a widely used open-source UI library, I’ve managed thousands of feature branches across various projects over 25 years of development. From my expertise, the safest approach is using git branch -d for local branches and git push origin --delete for remote branches. This keeps your repository organized and prevents accumulation of outdated branches.