why bother 何苦呢，何必烦恼呢

　　bother 烦恼，操心

　　Nothing I do makes any difference, so why bother?

　　既然我做什么都于事无补，还何苦费那个劲呢？

　　The exam is coming anyway, why bother?

　　考试终会到来的，何必烦恼呢？

　　You already know the end, so why bother seeing it?

　　嗯，你已经知道结局了嘛，何必还要去看？

　　疯狂练习吧！