You lose out on so many use cases without the stored output. The first that comes to mind is all of the learning resources that are now presented in notebooks.
Most learners do not need to fact check the instructor, but do want to see the operations which were run. Those that are curious can run/edit the notebook themselves.
Edit: The JupyterBook ecosystem (https://executablebooks.org/en/latest/gallery/) as an example of what is possible with stored plots/calculations. Most learners are just going to follow along with the material, but being able to optionally play with the data is the super power of the platform with minimal friction.
The parent comment wasn't fully correct. marimo doesn't store outputs in the notebook file, but it does have many ways outputs are stored alongside the notebook, or remotely if you'd like:
HTML, ipynb, pickle
Most learners do not need to fact check the instructor, but do want to see the operations which were run. Those that are curious can run/edit the notebook themselves.
Edit: The JupyterBook ecosystem (https://executablebooks.org/en/latest/gallery/) as an example of what is possible with stored plots/calculations. Most learners are just going to follow along with the material, but being able to optionally play with the data is the super power of the platform with minimal friction.