Sure, maybe you can skate by and manage a decent GPA, but you aren't doing yourself any favors, your basically telling us that you half assed four years of personal development, and you should know that it is probably obvious to those you've worked with and for. The corporate world has its share of people too, skating just like they were. Typically they are the ones not being considered for rapid advancement and grooming for bigger things.
Of course, you may just be exceptional. And it's not like you can't recover from this with hard work. But consider this as you head out on your own: Sometimes you just get lucky, but it's more likely that you will succeed or fail now largely on the back of hard work (and here's the tricky part) applied to the right places. Consider an alternative universe "you" who grabbed hold of college with both hands and squeezed until it gave up as much useful stuff as it could....
That guy would be eating your lunch right now. Not because of the college, per se, but because of the attitude and experience.