Naruto-SoulFusion

Hey guys, I'm wondering why Sasuke doesn't use his full potential. He has the Rinnegan, but he used it like an Uber (well, now it's gone). I mean, he can learn Sage Mode, create many kekkei genkai or techniques like Dust Release, Lava Release, and have the Sage body. He had the Sage of Six Paths power(moon side of power which help him awaken rinnegan), all chakra natures...and most of all can absorb any jutsu with rinnegan like he does to naruto at their last fight. What do you think about this?