I used Atom for a couple years and raved about it's features and package management but when it came to using it as an IDE, it fell short for one reason. It doesn't have a configurable way to debug across all languages. For example, try debugging python vs node. Python works well but node doesn't afaik.
OTOH vscode does have a way to do this using a `launch.json` file which is flexible enough to add custom debugging profiles for a single project and it can be stored directly in version control. I tried the editor out because of this one feature alone in order to debug node and haven't looked back.