As we know Sasuke, Boruto and Sarada doesn’t have Sage Mode, it would be cool to see those 3 gain Sage Mode. If Sarada and Boruto learns Sage Mode then that means team 7 would be Sage Mode users, although different if they learn from different animals.
Sasuke now is stronger than Jiraiya, Kabuto and Hashirama who has Sage Mode, Sasuke is now way stronger than Pain Saga Naruto when he gained perfect Sage Mode.
There should be no reason for Sasuke not to learn, heck Sage Mode allows the user to replenish chakra and not waste their own chakra.
Sasuke now is stronger than Jiraiya, Kabuto and Hashirama who has Sage Mode, Sasuke is now way stronger than Pain Saga Naruto when he gained perfect Sage Mode.
There should be no reason for Sasuke not to learn, heck Sage Mode allows the user to replenish chakra and not waste their own chakra.