The problem here is that your work ethic is not up to par because you can always think to yourself, "Why should I waste my time on this?" and not have an imperative answer ("I need to pass this class").
The major draw of a University education is that it forces you to focus and do the work. If you are driven and do not need the grade excuse to dig into a subject then you do not need to attend a University.
This becomes ever more apparent past the undergraduate level when you enter the workforce or a graduate program. You will end up going to classes or learning about material that interests you or is relevant to your work and you will do this without concern as to whether or not you get a grade at the end because all you care about is learning something you are passionate about.
The major draw of a University education is that it forces you to focus and do the work. If you are driven and do not need the grade excuse to dig into a subject then you do not need to attend a University.
This becomes ever more apparent past the undergraduate level when you enter the workforce or a graduate program. You will end up going to classes or learning about material that interests you or is relevant to your work and you will do this without concern as to whether or not you get a grade at the end because all you care about is learning something you are passionate about.