Definition
Doing something for its own sake means doing it because it is inherently interesting or enjoyable, rather than for any ulterior motive or external reward.
为事情本身
He enjoys running for its own sake, not to compete in races.
他喜欢跑步是为了跑步本身，而不是为了参加比赛。
She studies mathematics for its own sake, enjoying the challenge of solving problems rather than for the sake of exams.
她学习数学是为了数学本身，享受解决问题的挑战，而不是为了考试。
Many argue that art should exist for its own sake, not for political or commercial purposes.
许多人认为艺术应该为了艺术本身而存在，而不是为了政治或商业目的。