The presidential term limit was passed by a GOP majority Congress as a desperation measure because FDR had kicked their candidates' asses four straight times. Former Chief Justice Warren Burger called it the worst amendment ever added to the Constitution, and he was no flaming liberal. If there had been no term limits, I figure Ronald Reagan might easily have won at least one more term, and so would Bill Clinton.
And once again, the only way to impose term limits on Congress would be to get 2/3 of the state legislatures to agree to an amendment -- the entrenched politicians in Congress aren't going to vote to derail their gravy train, and the people of the states apparently are too dumb to exercise the power to vote them out after one or two terms because, just like people who have insurance under ACA don't think Trump's repeal would apply to them, people in the provinces think term limits should only apply to someone else's Senators and Representatives and not their own.