The problem that I was referring to above, is that a good leader might be able to rule for 40 years, if there were no term limits. Leaders who are worthy of that privilege / burden are so rare though, that if you eliminate on just because of an arbitrary limit, then they will likely be replaced by some worse than them. Bad rulers are unlikely to win a third term in the first place, assuming that the electoral system is working.

Because I'm an incorrigible optimist? No but seriously, do you have any anecdotes regarding an election where a difficult choice had to be made between multiple good (from the perspective of a large majority) candidates? Because I don't (Canadian, in my 30s).