The reason JavaScript ES6 Promises continue executing after resolution is rooted in their design philosophy. Promises are designed to handle asynchronous operations, enabling code to proceed with other tasks while waiting for asynchronous operations to complete. When a Promise is resolved, it signifies that the associated asynchronous operation has completed successfully. However, this does not imply that other parts of the program or other asynchronous operations will halt execution.
Additionally, JavaScript runtime uses an event loop mechanism, which continues processing other pending events or tasks even after a Promise is resolved. Therefore, even if a specific Promise has been resolved, the JavaScript execution environment continues to run, processing other code or events until all tasks are appropriately handled.
This design ensures efficient resource utilization and a good user experience, as it allows multiple operations to proceed concurrently rather than sequentially.