Why not make the cap for presidential terms 12 years instead of 8?
Answered by: Sylvain Saurel,former https://sylvainsaurel.substack.com/
Being President of the United States is something extremely difficult physically and mentally.
All presidents who have spent 8 years in the White House look like they have taken 20 years out of that time.
Barack Obama was still extremely popular in 2016. He could very well have been elected for a third term for example.
Nevertheless, this limit is made to avoid that presidents end up totally exhausted after 12 years. Serving one's country to the best of one's ability for 8 years is hard enough.
Beyond that, efficiency would probably be reduced. This limit must therefore remain as it is. It also favors renewal at the head of the country.