The title sums it up.
I am aware there are several side quests that involve going to take pictures, but those quests reward experience and/or AP. (And there's an trophy/achievement for looking at a pic with a photo bomber in it) Will discarding all photos without review affect the my game in any practical way?
Best Answer
No
The OP has already pointed out the few minor bonuses that taking pictures can provide the player. Shawn's answer does point out an end game action using the pictures, but that has no practical game play purpose.