1) From the point of view of utility (making money), I studied my major for several years for nothing, because my major was useless at work and was not used to make money.

2) From the perspective of acquiring knowledge, there are no majors that study for nothing, especially some basic majors such as mathematics, philosophy and philosophy, which exercise people's thinking ability in the learning process; Any major will have some common sense things more or less, which are not used in work, but can be encountered in life.