Why would you remove an app if you want it to stay set up? iPhone has the "deleting an app will remove its data" thing for this reason.
Ironically, removing many iPhone apps does not delete its data (as far as the user is concerned) because the data is actually in the cloud somewhere.
Lots of possible reasons:
- You used a trial version of a software, or other time limited license, and want to keep the output from that around.
- You are upgrading and that particular app requires uninstalling the old version before installing the new version
- You run out of disk space and want to uninstall a game but don’t want to lose you’re progress
That’s just what immediately comes to mind but suffice to say any workflow will have legitimate counter examples.