I'm highly competitive, and I love winning and seeing winners. It's a beautiful mindset, and for me, it has nothing to do with dopamine. Corporate CEOs and football teams are paid big money to win. If I don't win, I want to give the other person hard times and a kick in the butt. It just makes the game a lot more enjoyable. However, it shouldn't become counterproductive, and people start destroying the joy of things or relationships. It's OK to lose, but why lose if you can win?