To add to the point above, it's worth understanding that IntelliJ is not an editor. It's a refactoring engine with a very nice structured editor, and the key to using it effectively is to use the higher-level features that it provides.
If you're not using the refactoring tooling then you won't understand why many people love it so much.
[It's worth looking under the hood at the plugin APIs. The editor doesn't work on text files. It works on ASTs.]
