Because it was possible
"More interesting, [J. Robert] Oppenheimer believed that technology and science had their own imperatives, and that whatever could be discovered or done would be discovered and done. "It is a profound and necessary truth," he told a Canadian audience in 1962, 'that the deep things in science are not found because they are useful; they are found because it was possible to find them.'"
~ Oppenheimer's Ghost, Technology Review