I think it is interesting that most of decide that college is in our children's future before we ever have them. I know this is true of us. However, since I teach freshman composition at a local community college, I also have another perspective.
MANY of my students are not ready for college when they arrive at the ripe old age of 18 or 19. They are interested in exploring their first real freedom, and becoming an adult in many ways, but education is, sadly, not high on that list for a lot of them. When mom and dad are footing the bill, they often slack off, and fail out of the course, or drop later in the semester, and it doesn't cause them any worries -- the parents will pick up the tab each semester, even for courses they may have enrolled in several times.
My favorite students are the ones who get out of high school, work for a couple of years, and learn whether or not they WANT to go to college. Those who go the military route are fantastic. When they enter my class, they are disciplined, engaged, and work hard. They are committed to their education, particularly since they have made a sacrifice (either through military service, or paying their own tuition, or part of it) to get into that class and earn that degree.
So many college freshmen fail out of college, and there are many reasons. Some have talents that are not served by academia, and some will have those talents but need to do some maturing first. But I have met many students who are at college at 18 anyway because mom and dad had this planned for them from birth. It's kind of like the families who scream at their kids that they've spent a lot of money to go to Disney World and now they are going to enjoy it!!
Here's a case in point: one likable young man this past semester came to my class perhaps once every two weeks, tended to turn his early papers in by the deadlines, but didn't do well because he wasn't in class to work through important parts of the assigment so that his essays were on track. Late in the semester, after he had failed to turn in his research paper, he came by my office. His excuse for missing so much class, and the paper deadline, was that his job came first, because he had to make enough money to pay for his car and the insurance. That was his priority. Mom and Dad had paid for the tuition, but he had to pay for the car, so he'd skip class to get to work, or skip because he was tired from work. Some people will try to make the argument that because kids have to work to pay for school, they suffer. But most of my students are not working to pay for school, they are working to pay for fun. And many of my students are not suffering: they're spoiled.
Don't get me wrong, I want my children to plan to go to college, but I'm open to letting them experience the real world, including the burden of paying bills (and tuition) on a low income to learn the value of an education first. Once they are mature enough to accept the responsiblity, I will do whatever I can to help.