In short, there is no definitive answer to this question. The case for or against using JavaScript on the server largely comes down to individual factors such as the needs of the specific application, the size and complexity of the codebase, and the availability of support libraries and frameworks.
That said, there are a few reasons why using JavaScript on the server can make sense. For example, scripts written in JavaScript can be executed quickly and easily across multiple devices, making them an ideal solution for client-side app development that might need to be deployed to multiple platforms. Additionally, because JavaScript is a relatively lightweight language you may find it easier to manage and update than languages such as Java or Python, which could be particularly important if your application relies heavily on external APIs.