This is a discussion on responsible game and excitement within the online poker forums, in the Online Poker section; What does responsible play teach? because excitement always wins, even if you all lost or won a lot.
You are right in a sense that excitement wins most times. Dopamine rushes through your brain among other things. Responsible gaming is more or less a mantra given by regulatory authorities to protect players and minimize the negative effects that may arise from gambling. If a player doesn't have adequate self control over his spending on games it is only reasonable that some limits are forced upon on him.