Dumb voters aside for the moment, the reason we even have a Bill of Rights is because some of Founders argued the eventuality that someone might come along one day and ignore our God-given rights if they weren't formally written down. They understood that not all people are inherently 'good', so to speak. My point is that it's too bad that 'term limits' didn't enter their radar in similar fashion. As longarm points out, lifespans weren't that long back then and, besides, politics was supposed to be a side gig that you participated in for a set amount of time before returning to your day job. I find it egregious that there are people in Congress today who have been there since the Reagan years.I not sure. They perhaps thought voters would not be dumb voters, or that the voting system would not be hijacked.
Free from dumb voters and election fraud, voting for good people time and time again makes sense.
Now, as to the question of voter intellect, that's a whole different matter. Gov't education has masterfully created generations of exactly the types of voters they want. They require lemmings, and by God they got them, in droves. We've managed to eviscerate the legacy left for us by the Founders. We have much to be proud of indeed!