For recent commits, it is useful for figuring out causes of bugs that have been brought up recently by checking out to an earlier commit until it goes away.

As for commits that are over 2 years old, they still serve a purpose. For a legacy app that I worked on, I had `git blame` ran on every line (vim and vscode both have support), and I was able to see who worked on a block of code last. Sometimes, those developers are still there and available to ask questions which has helped me greatly.