Many users all over the earth globe create a duplicate of the already existing WordPress posts or pages. To the need for these actions, they are forced by the necessity of backup creation or staging of the website. This means that they create a copy of the resource to do some changes and in case of failure have a version that still works right.
The other cases when it needs to create a copy of a website is when you move your site to a new domain name, a new server, or simply develop the client’s website on your localhost and they want to preview it before putting it live. Some hosting companies provide staging and cloning features. If you are not using managed WordPress hosting – you can simply use a plugin that helps you to clone or duplicate your website.