Well, of course it depends on how you and the woman in question (and potentially the other person/couple) prefer it in real life. What I meant was along the lines of what Dragon59 described as the "new shiny". If I am mostly interested in having action with my partner, we could stay at home. The fun in swinging, as I understand it but I am not a swinger myself as stated, is experimenting and experiencing something different. As I say in different cases it does not have to go all the way necessarily, but the new and potentially unknown carries some intrigue my old penis with all the known veins and everything does not.
I find that quite harsh. I am pretty certain that most devs around here care about their characters and will stall at the suggestion that Ashley would join a threesome (to pick a random made-up example) because that would just not be her at all. However, there will always be a certain disconnect between the dev and the players - (good) devs have a certain idea how they want their story to go, maybe including a twist, maybe not, and the players have their idea how they want stuff to continue which will not line up with the dev's idea - or with any other player's idea for that matter. But a good dev knows more about their characters than any player will ever find out because favorite pizza topping is just not part of the game.
Also regarding player freedom: I dislike kinetic novels (as can be seen in my signature), so I want some choice. I once gave a scathing review of a game in part because of how I (playing a teacher) had to grab a student's tits. Don't get me wrong, I would have done it given the opportunity, but I would have liked to be asked. That being said, there is only so much freedom a game like this can have before it becomes overburdened, especially considering that most games are made by single devs or at most teams of three. You can not allow the MC to leave the city or skip his wife's party, even though it might be prudent in real life, because that would change the course of the story too much.
Oh, I do too. Of the three groups (players who play the MC as they would in this situation, players who identify with the MC but would be willing to make choices they would never make in real life, and players just viewing a story unfold with characters who are not them) I firmly belong in the first. So the MC matters to me. However, apart from the fact that the other two groups exist as well, not everybody will agree on where the fantasy and realism should have their boundary. Some want that magic dick that makes every girl fall in love with you (not me), and some will say that a girl will be seduced by some other guy in real life (also not me).
If it is of any comfort to you, Rock is not part of said scene