It's useful if someone wants to go back and try other combination of choices. I like to do it with After Class by Andy Peng since there is unique dialogue depending on how much the character likes you back. @Killer Chimera I doubt you need that many save slots either. Just use the preferences to skip text you have seen already. From what I am able to tell in PASSWORD right after making a choice the character will either express themselves positively or negatively. So if youre trying to get the highest affection points I think it will be easy to just go back a few dialogues and pick again. In fact Grizz doesnt really change much from the low affection dialogues so it's not like youre missing very much.