Exactly. College/University life is *not* for everybody. A college diploma is not necessary for a fulfilling career. It can help, but it's not necessary or sufficient. I do know alot of people that should have went into the job field or the military straight out of high school. It's sometimes sad to see the amount of state and university money that sometimes go to the students in scholarships that are wasted in the first or second year, but that more of a symptom of high school problems.
Most of these students (like ShawnD1's classmate here, most likely) seem to get caught by this sudden increase in freedom that you get when you get out of high school. Alot of people thought I was too stiff or stressed out, but in reality, I did party and drink in college, but I didn't do it every weekend. I also played hockey every week (and usually several times a week), and refereed quite a bit to pay for that hockey habit of mine. I studied for tests at least 2-3 days in advanced, instead of only the night before. Hell, I read over the material if I had problems getting to sleep at night (And believe me, Linear Algebra and Database Design can really put you to sleep really quick...
). It's not like I studied laboriously every night, and kept track of every single grade I got. The only thing I really worried about was maintaining the requirements for my scholarships, but I was never in any danger of not meeting them.
So, in the end, don't feel sorry for these "slackers". If anything, feel sorry for the loss of their potential, but it is possible that they may decide to hunker down a bit to reach that potential.
And again, a college degree is neither necessary or sufficient for a fulfilling career. It seems that more people need to realize this.