There's an old saying around the racetrack: "never love a horse". That should go for politicians as well. They will disappoint you more deeply than any thoroughbred racer.
They can’t help but disappoint. The best of them will have so many forces arrayed against them, they can’t hope to accomplish much. Reagan was the best president of my lifetime, but he was able to put a mere dent in the mess. He tapped the brakes. The rest of them have either coasted, or stepped on the gas.