The number of people who are under the age of 30 who are actually concerned about their retirement can probably be counted on one hand, but the people who have been thinking about going back to school and getting their degree who care about such things is most likely a whole lot higher. Consider the notion that your degree might be able to help you, not only to live a higher standard of living in the short term, but also to retire at a younger age and have better return on your investments when the time comes to get into retirement.
For one thing, having a better job (as a degree is likely to help you achieve) can help you to put away a whole lot more money than you could if you had never gotten your degree. After all, proletariat jobs are not known to administer a great deal of disposable income to the people who work them. It is a sad fact of our world that a whole lot of its people are simply not able to earn what they would really like to, and thus can barely save anything at all for their futures.
Another side benefit of having a degree, however, is that not only can you make (and thus save) a whole lot more, but that you might be able to invest it more effectively. After all, a lot of white collar jobs offer their employees a company match to their 401(k), and even employer sponsored financial planning as an additional benefit. This is not even mentioning that for a lot of people who have a degree, their network includes at least one financial planner that they met in college.