> I happen to use ruby at work and native debugging is enough - you can drop into an interactive console at a breaking point adding a single line, with no tooling.
If you've only ever used this type of debugging, you should really try out a real IDE debugger once. The difference in productivity when you can use your IDE to navigate to, say, the usages of a function and then just press a keyboard shortcut to put a breakpoint on the line with that usage is immense.
Compare this to the native debug support: you have to leave the interactive debugger, move to your editor, find usages, note down the file name and line number, then go back to your interactive debugger and type a manual break command (break my_file.rb:2517 or something). All of that context switching and remembering is replaced by a single keyboard shortcut in Emacs, VS Code, or any other integrated debugger. And no, adding manual breakpoints in your source code is not simpler - what I'm describing works interactively while your code is already running, whereas a breakpoint statement requires you to restart the whole process.