ikr... he had a massive hole in his chest, chakra was gone and he was resisting madara's chakra rods.... ppl dont give obito credit..You mean after exhausting his chakra/stamina during the beginning of the war (controlling Gedo and 6 bijuus), while getting impaled 2 and breaking Madara's control at the same time?
After all that, he still had the drive to tame the juubi <---with zero chakra left
Simple~minded people forget so easily :|