My guy, games and media in general are made to evoke emotion. Maybe it's the devs' intention to make you incandescent with rage — and if that's the case, they did their job well. But in my opinion, those kinds of emotions don't have to be part of a NTRS porn game.
Seriously, how is this game improved by making the player so mad that it distracts from everything else? If the main point is jerkin`your dingdong, why bury that under this layer of frustration? At some point, it stops being engaging and just becomes noise that pulls you away from what the game is actually trying to do — or should do.
With all respect, but you are letting a small part of the game ruin your whole experience! Besides, the insurance plot is important to the story, because introduct the origin of MC's problems (he being bedridden with pain), the aparent solution (the "miraculous" medicine), and what possibly caused him to "support things he normally wouldn't" (this meds true effects)! Not only that, but also adds depth to the situation, making it look even more miserable to the MC (evidenced his financial difficulties, demonstrating he invested REALLY heavy in this honeymoon he just lost), and provides justification for Lilly to begin posting naughty stuff online and start involving thirds, strange people, in their intimacy (to "get more money for MC treatment", because of said financial difficulties). AND introduces us several characters, like Victoria and that phony-ass doctor (which pushed that damn medicine in the first place, knowing it had weird side effects)!
I understand you are specially sensible to those matters, but understand that this is an integrant part of the story, and removing it now would demand some serious rewritting almost from the start! And there's no guarantee it'd make so much sense with the story as it's meant to!
Personally, this, among other things, irritated me as well! The whole background of this story is
essencially wrong! But, let's face it, if the situation was right, it wouldn't be a NTR/NTS situation! Wrong, messed up things gives a differential for NTR/NTS stories! This is why I think it's an excelent NTR/NTS story, despite making me ill sometimes! I believe you are in the same situation, so maybe you should just take each part of the story as a single bit, digest it, and then move on and forget about it! Remember it only when it's essencial, and don't keep yourself coming back unnecessarily, cause it will only cause you more dispensable stress!
And, if it fails, remember Xsara said! This is just a game! A game cannot hurt you, unless you allow it to! So don't! Close your eyes, take a deep breath, and count to 10, or 100, or 1000, whatever it takes to take your mind out of the stuff causing you agony! I understand that you put yourself in the place of the character you are playing! Put yourself too much! I know, because I do too! This is why it's important to try and take control of your feelings, for you are letting a fictional experience affect you IRL!
If everything else fails, and you keep feeling restless about playing the game, then maybe you should skip this one! You know, it's not like this is the only title around, and there's no need for you to cause yourself harm!