Here are some examples:
* "You've been working so hard on this project, but to what end?" This implies that the speaker is wondering if the effort put into the project is worth it, considering the unclear goal or benefit.
* "They keep making these changes, but to what end? It seems like they're just creating more problems." Here, the speaker questions the purpose of the ongoing changes and suggests they may be unproductive.
* "He spent all his savings on a new car, but to what end? He doesn't even have a job." This example highlights the lack of a clear purpose or benefit in spending a significant amount of money without a solid reason.
In essence, "to what end" encourages reflection on the ultimate objective and whether it justifies the means employed.