After years running macOS, I'd like to remove all clutter that it has accumulated.
Is it possible to completely reinstall macOS but keep users?
I mean, can I install a clean copy of macOS, removing all user-installed apps and all third-party files, but keeping all user folders and preferably all users too?
In other words, can I restore all folders in / to their original contents, except for /Users?
Or is this the only way: backup user folders, wipe clean, reinstall, recreate users, restore user folders?