For the showering, yes, only to get hard, then I'd join.
Back on topic - I do agree that it is refreshing to have stuff other than the usual "whoops I just saw Bro/daddy's dick in the shower, it's so big", no questions there.
However, If things gets too realistic, it's just not enjoyable in my opinion, not just for adult games, but games in general.
Take other games as example, with superb plausible and realistic stories, they have next to no adult content usually, which is unfortunately, the same here.