for its own sake idiom
因为其本身（有意思或好玩）的缘故
If you do something for its own sake, you do it because it is interesting and enjoyable, and not because you have or need to do it.
I believe in education for its own sake, not just to get a good job. 我主张学习本身的乐趣，而不仅仅是找到一份工作。