Except I'm not, I've never been into games of any kind for sexual content, even ones whose main focus is sexual content. If I want sexual content, I'll go for actual porn I don't have to interact with. I wouldn't change my mind since the sounds would be generic porn sounds and probably from a porno that I could watch without having to interact if I wanted to hear them. If you're thinking it's going to be some voice acting specific to Harem Hotel, I would suggest forgetting that idea because this is a one man project and voice acting gets real expensive real fast.
Definitely, nothing kills the mood faster than useless noise drowning out important noise like in your example. You're right, they sound fake, they rarely fit with the imagery unless the game has audio specifically recorded for it, again very expensive and not feasible for one man projects, and they are distracting. They are actually a huge turn off for me when I'm gaming, I game to game, when I want to fap, I will choose something that doesn't require interaction so I actually have hands free to do so. When gaming, my hands are on the mouse and, out of habit, WASD.