I thought this was a sobel image

You wouldn’t know him, he lives on a different cache level

You get the most out of them when working on bigger projects with many files and multiple contributers:

• Version control integration
• Automatic profiling
• Debugger integration
• Refactoring
• Jump to Definition/Parent/Children/Usages of a Symbol
• …

For changing a single file, I’d often just launch a simple editor too.