How do you determine what a good ROI is and who makes that decision? There are many employers who do want people educated in the Humanities and Social Sciences. Those employers wants skills like problem solving, communication, people-to-people, cultural competency, etc (there is data and research that backs all this up), and not just engineering or computer skills.
Though taking classes at a Community College may, and I stress may, save some money it is nothing more than a glorified 13th and 14th grades. I say may because as someone who works with Community College students transferring into ISU I can say many are here more than two years. I have this conversation with students and parents all the time. They think they can get an AA and transfer to ISU and be done in two years. That isn't necessarily true. It all depends if a student is taking the correct classes at the CC. If a student wants a STEM major, well, forget it. There is no way a STEM majors transferring in from a CC will be out of ISU in two years. ISU has a heavy presence at DMACC and we tell their students and their advisors this all the time and most do not listen. I have this conversation with friends who have college aged kids and they simply don't believe me until it hits them in the face. The automatic assumption is two years at a Community College, then two years at ISU then done. For most that isn't true and the tuition savings isn't that much.
And thank you for the car loan statement. This is absolutely true. Families won't think twice about a large car loan, or boat loan, or mortgage, but an education? God no! My first year in higher education I worked with a student who was crying about tuition costs. Said parents had so much debt because little brother was really sick, he almost died, and they had so many medical bills. All of that was true, and the College gave them a bunch of gift money as a result. Well, a few months after enrolling the student let it slip that parents were building a new house, had a cabin on the river with a boat, and there was no way they were going to give those things up for college. Priorities are way out of wack.
End rant.