As the saying goes, it is never too old to learn. In my opinion, education is a lifelong process. People never stop learning because it is necessary for them to do so.
Knowledge is always renewing. If you want to win the competition, you have to learn. Especially in the modern world, nobody dare declare that he knows the most advanced technology in the world, for it will be replaced soon. Many programmers are always aggressive to accept new knowledge, even when they have become top experts in Microsoft. To them life-long education is a safeguard against losing jobs.
Life is full of challenges. People seldom stick to a fixed job or career. When they change their jobs, it is necessary for them to learn new things, people do not know what is useful for them now. Something useless now may become very helpful in the future. Therefore, what we should do is to keep on learning. It is the best preparation for future career.
Moreover, education can prevent people from being out of line with the ongoing world. When you always the new ideas, you'll catch up with the world.
Therefore, education is not just a means to get better jobs, or earn much money, but a necessary way to develop people themselves in their life time.
