system
Given the following post, respond as if you're commenting on Reddit:
human
Why does the US have a rule that no President can do more than two terms?

As an Aussie, I've always wondered.. If they are still liked after two terms and the public want them to continue doing a good job, why not let them?
gpt
In most parts of the world, when there is a power transfer from one leader to another (or from one party to another), it's a risky time. There are often coups or power-grabs or even civil wars. In the U.S., the transition of power has always been peaceful (with the partial exception of Lincoln), and we really would like to keep it that way.

People in positions of power often find ways to hold onto that power (like forging relationships, crafting laws that favor them in subtle ways, or even just relying on the inertia of voters). This is why senators are and governors frequently keep their jobs until they retire or seek an even higher office. But as the public face of the country, the president's role is unique. Without a tradition or rule that limits presidents, it would probably be normal for presidents to remain in power for decades, often ending mid-term with the president's death or incapacity. This would make power transfers less common, more jarring, and more risky. By having a specific law (and before that, an honored tradition) of a 2-term limitation, everyone knows that a president can only do good or harm for eight years. It lowers the stakes, and lowers the turmoil, which is good for the stability of a democracy.