Plus, you're ignoring that in college many students have the opportunity to spontaneously begin working on projects together that they would never be able to outside of a college campus. I remember reading on here even that a student team broke a world record for a rocket launch I believe, and all the commenters agreed, it could not have happened outside of college, it could not have happened with those exact "responsibilities" that you refer to. Elon Musk has eleven kids just because, you know, he can--many aspiring parents in this country today struggle to have just one.
Those responsibilities? They are the crushing of individual creative potential in society through the extraction of wealth via wage-labor. Oh, but it's "privileged" to be a creative, its privileged to build something on your own for your own sake, its privileged to go out and explore and discover new things, its privileged to have children; perhaps you might see why many believe their own society has it out for them, and why this whole logic of "building character" is just a horrific repetition of their daily lives filled with meaningless toil just to survive so some millionaire can have an existential crisis because they can't imagine a world outside of it.
"There are more things in Heaven and Earth, Horatio, than are dreamt of in your philosophy."
The freedom you have in college is a shallow, parasitic kind of freedom. College is the apex point of your being an uncontributing member of society. Up to that point all you've done is receive. Becoming an adult is taking on responsibility, contributing to society and earning the real freedom to live a life you value. If you maintained the supposed freedom you have at college you're just blind to the fact that you're totally dependent on other people. A more authentic version of the college freedom would be to go live in the woods and forage for sustenance.