For me, politician. You have to exploit the worst low instincts of the people to get elect and say what they want to hear, even if you don’t think a word about it, and you are not obligated to hold any of your promises.
I would say any public-facing government job. Dealing with the public’s varying and sometimes unrealistic expectations, changing leadership and direction, and even government employee-hating coworkers can leave one rather jaded.
IT Security
This might be broad the sciences like biology or physics but for context I have a few friends who is a science teacher and a physics job. Unsure what the other guy really does. All they talk about is how the other is better. That everyone else job is a lower class then them. I do computer science they say it isn’t a science but always ask for computer support.