I mean you say that but it's precisely because of the fact that one can miss out on H-Scenes, other content or character (in this case, I guess affection) points that people tend to look for walkthrough mods or a walkthrough.
From my experience I tend to just download the universal renpy mod and it makes looking into what choices I make much easier. Not many have the time to wanna go back and play the game a couple more times just to seek out missing content and I'm one that shares that same sentiment. Cheers.