I've always enjoyed arguing (in the sense of a polite dialogue between two who disagree). But for me, even though I enjoy arguing, being right is more important -- which includes trying to cultivate the discipline to recognise and acknowledge when my interlocutor makes a good point, and trying to understand why they think what they do.
At university, I checked out the debating club, thinking it might be a good fit for me, but I was wrong. There, the goal seemed to be purely to win, correctness be damned. I found the arguments they marshaled towards their goal to be dishonest and contrary to the goals of increasing understanding and getting to the heart of a matter.
I can see how that could be seen as a sport or competition of sorts, but I worried about the kind of habits it might form. It is too similar to the kind of arguing I enjoy that it would be easy to slip from one mode to the other if those debate club type skills were developed and honed.