02 Recent argument I had

I had an argument with my friend recently about pre-requisites in college, and how I feel that you shouldn't have to take them. In high school they make you take a myriad of different courses to make you a more well-rounded individual, but also to give you a view of different subjects so you can find which one you like. Why is it then that in college, if you have already chosen to be, say, an English major, that you must take science and math courses as well. My friend was arguing that they still make you take pre-reqs in college for the same reason as high school, to make you an overall smarter individual. I think, however, that this is just another tool colleges use to make more money from students. If this is the case, and schools aren't willing to just part with two full years of tuition from students, then I propose a new plan to allow both schools and students to win. If you have already chosen a major, instead of pre-requisites, they should just make you take more classes that deal with whatever your major will be. What do you think class?