The Finder is the most used icon on the Mac. The end user can find him/herself using it several times a day.
One thing that should be enabled by default is a Quit Finder option, because their will be times that a user would need to quit it in order to re-enable it for one reason or another.
Advanced users can enable such a option by using the Terminal, and typing in the following:
You can enable the quit option by entering the following command in Terminal:
defaults write com.apple.finder QuitMenuItem -bool true; killall Finder
To revert to the original settings:
defaults write com.apple.finder QuitMenuItem -bool false; killall Finder
Now when selecting the Finder top menu option, you’ll see the Quit command.