Not using the Mac App Store gives you more control over your apps. It allows you to distribute apps to OSX machines without an internet connection, it allows you to rollback versions or choose not to update, etc.
It took me a year and threats to file complaints with the FTC&FCC to get unsubscribed from their bullshit emails. That's what spam.
> It allows you to distribute apps to OSX machines without an internet connection
This seems like a pretty rare situation these days, but even in that situation, if those machines can be given internet access once to authorise them (e.g. via a phone hotspot) you can just copy the .app bundles.
> it allows you to rollback versions or choose not to update
The Mac App store doesn't force you to update either. Admittedly it doesn't allow rollbacks, but you can always restore from a backup and then choose not to update. You do have backups right?
Not using the Mac App Store gives you more control over your apps. It allows you to distribute apps to OSX machines without an internet connection, it allows you to rollback versions or choose not to update, etc.