I disagree. A major like physics is not a “placeholder” major for people that are undecided on what they want to major in. Physics is an appropriate major for someone that genuinely likes and is good at physics. It does open up a wider range of opportunities than many other majors post-graduation, but that’s because it’s a very difficult major. It requires a great deal of problem solving and critical thinking abilities, which happen to be very beneficial qualities in law, finance, etc. However, declaring a physics major due to the possibility of getting a job in banking or law later on is a poor reason to declare a physics major. I don’t know that there’s such a thing as a “hardest major,” but if one were to make a list…physics would be one of them. If one does not genuinely like physics, one is not going to succeed in a physics major.