I think people here have made very good points, but you also have to realize that colleges in the US have nothing to do with most colleges in europe (where I'm from anyway), you guys have clubs, and debate teams, and dorms, idk who pays for all this shit.
My university had class rooms, labs and a library, that's it, there was no fluff, no extras, every event that was put together was done so by the students (and you're supposed to turn a profit) or by companies trying to recruit us. So it was fairly cheap, it costs about 20% of minimum wage to go college here, about double for a private university( So it's not even about government funding), masters degrees and doctorates are more expensive.