The reason behind this is that there are many ways to pay for college, such as grants, scholarships, work-study programs, student loans, parent loans, etc.. With this plethora of choices, it becomes clear that your student’s college funding needs can be met from quite a few angles, none of which should have a dramatic impact on your overall net worth (or your student’s).
On the other hand, no one will give you a scholarship to retire. It is solely up to you and your savings (coupled with Social Security and any available pensions).