Despite its simplicity and ease of use, under the hood WordPress is a fairly sophisticated database-driven system with lots of underlying source code. The reality is that WordPress requires consistent maintenance to remain stable, secure, and in good working order, like any other software.
Setting up a WordPress website is not a “set it and forget it” proposition. If you’re using WordPress as the content management platform for your website, it is imperative that you have WordPress maintenance plan to support it. You do not want to be one of the website owners who learn this lesson the hard way.