There are several reasons why Apple may have decided to remove Live Wallpapers from iOS 15. One of these reasons could be to improve the overall performance and battery life of iOS devices. Live Wallpapers, by nature, tend to drain a lot of battery power as they constantly run in the background. Additionally, they require a lot of processing power, which can slow down the performance of older iOS devices.

Another factor that may have contributed to the removal of Live Wallpapers could be related to design and user experience. As Apple continues to refine and simplify the user interface of its devices, the inclusion of Live Wallpapers may have been seen as unnecessary or distracting. Instead, Apple has opted to focus on more subtle and refined design elements, such as dynamic widgets and new app icons.

It is worth noting, however, that Live Wallpapers may not be completely gone from iOS devices. While they are no longer available as a built-in feature, there are still third-party apps and services available that offer a range of animated backgrounds for iOS devices. Additionally, there may be ways to create your own Live Wallpapers using different tools and software.