3D printing means to cut out an object, totally turning energy into complex living matter and vice versa is light years away from safe. While Einstein may not be completely right about the speed of light to some people, it still takes demonstratably a large quantity of energy to form miniscule quantities of matter, and that energy is usually really intense and deadly, such as gamma rays.
But consider the world just 100 years ago. If you told somebody from 1914 that everybody in the world would be able to communicate with each other instantaneously and that movies and music would be sent to a device that could be held in their hands, and that they would never get lost because they would be able to communicate with satellites in space that could tell them exactly where they are and where they need to go, and that all the world's information would be available at your fingertips through a system called "internet", they would smile indulgently and motion off to the side for men in white coats to come take you away.