There's a certain level of jealousy, plus a feeling that colleges are just Marxist indoctrination centers.
Education is a good thing. In many cases, it isn't all that expensive. Sending your kids to a run-of-the-mill state school such as Michigan State is well within the means for most middle-class family. Conversely, the high cost of a prestigious school such as Harvard or MIT is worth it for all of the doors that such an education opens.
Yes, but how many of us would get accepted? (Harvard rejects 92% of their applicants)
Even in-state schools run close to 20K when you factor in books and fees. Penn State's tuition is 10K, and room/board is 8K. Add in about 2K per year in books. You think a middle-class family has 20K per year extra to spend per child, over 80K for 4 years ?