"To 3D or not to 3D?" is a question moviegoers often have to ask themselves when hitting the multiplex to see the latest blockbuster, but the debate doesn't stop at the paying customer. Sometimes it's the filmmakers themselves who are dubious about the technology, even as they work with it. This issue has come to light after J.J. Abrams revealed that he himself was not sold on converting his latest, 'Star Trek Into Darkness,' into 3D initially. In fact, he had it forced upon him by the studio.