I can easily fetch/pull/push/merge and switch between branches with a click, which is much faster than typing git commands and branch names. I can back merge/rebase changes basically do anything way faster than someone typing in a ton of text to do the same thing.
Plus I can get the same situational awareness across all my repos by just clicking through some tabs. No directory change commands or any further git commands to see the state of things. I feel like I have a better situation awareness, am much faster, and haven't had to type a git command in a long time. I work on a team of many developers who use the CLI and I still don't understand the appeal.