Students have many options of what to do with all of the textbooks they have accumulated during their school years. They can keep them which would require storing and transporting them throughout their lifetime. Its been found that most will never go back and crack open any of their school books again. The only benefit of them is usually just to show off to guests in your home and make you appear smart despite most likely having only retained a small fraction of the knowledge.
Why not sell them and rid yourself of the burden of lugging them around every time you move?