I like chess because its one of the very rare situations where i can control everything
Good answer. Not sure most people are self aware enough to give an answer like this.
So I'll answer seriously too. I like it because:
1) There are always new things to learn and room to improve
2) No matter how good I get there will always be opponents to push the limits of my performance
I like chess because its one of the very rare situations where i can control everything