Physical
+ It's cheaper (physical is at most €60 vs. digital is €60/€70 depending on the publisher on PSN)
+ You can return/trade-in/re-sell the game
+ You can loan the game to a friend
+ Collector's Editions
+ Installing a game is way quicker on PS4 (physical takes a few minutes at most, downloading a game will take hours)
Only games I buy digital are when they're on sale, such as the PS+ Driveclub discount which got me the entire game for €22.49
By the way OP, both PS4 and XB1 fully install physical games to the HDD so that point can be thrown away








