The universe the show takes place in is massive, there is absolutely no way in hell it could be done in 2D. 3D animation is an art unto itself, and I wish more people would just accept and embrace it because the character animation work in this show is absolutely amazing and detailed. :/
You're right. Sorry about my comment. Over the past year I have seen so many things to show how beautiful 3D art can truly be. I'm just sad that 2D is now considered "unprofitable" by Hollywood. In gernal I wish animation had more respect here in the U.S.