system
Given the following post, respond as if you're commenting on Reddit:
human
Why does the 22nd Amendment exist? I know the historic reasons, but what benefits to the country does limiting a President to two terms?

I'm not from the USA so apologies if this is a question answered with common knowledge or is a bit stupid. But obviously we've just seen the inauguration on TV over here and there was talk about this being his last term, but no real explanation as to why this amendement was made. 

To me it seems strange that even if there is the backing and confidence of the party and the people a President couldn't stay in power for more than eight years.

I would be grateful if someone could give a quick explanation to this!
gpt
The "two-term limit" for US presidents was an infomal rule that goes as far back as George Washington. Until Theodore Rooselvelt (unsucccessfully) attempted a third term in the early twentieth century, everyone had respected and followed the rule, which was thought to be essential to the avoidance of the type of tyrrany inherent in monarchies and other non-democratic systems of governance. After Franklin D. Roosevelt successfully retained the position of US President for thirteen years, and in the aftermath of defeating a set of tyrannical dictatorships, it was deemed necessary to formaly codify the two-term limit rule. There are some historians who argue that the in-office illnesses suffered by both Franklin Roosevelt and earlier by Woodrow Wilson also played a significant role in the adoption of the 22nd Amendment, as there was significant concern that the President's power could be (and had been, in the case of Wilson) coopted by another person when the president became disabled. The 22nd Amendment would preclude the continued cooptation of presidential powers through the legal time limitations on that president's power. There are a number of other factors as well, but these are arguably the most important ones.