Being able to search and replace all instances of a string in a text editor definitely speeds up the editing process. In an editor like Atom, the process is mapped to a keyboard shortcut but I find myself still reaching for the mouse to kick off the Find all and then Replace all process.
With Vim, it’ll take some time to remember the [command for search and replace]({{ page.link }}), but I think the implementation is clever and I really dig how to process can all be done without reaching for the keyboard.

You can even get Vim to provide a confirmation prompt for each instance found and asks whether you want to actually replace it.