However, maybe you want to give your old Mac to your kid, and you want to erase the data, but you want to keep the applications that have been installed. The first thing that will cross your mind is to format and reinstall your Mac, which is a good idea.

You want to erase everything, and prepare the machine for its new user. Sometimes, users want to give their old make to someone else, because they want to purchase a brand-new one.