I'm quite impressed at how many people can completely miss the point of the people they are attempting to argue with.
Sisterpants or whatever has been brainwashed by the psychotic femnazi wing of the feminist movement to live in constant fear of every single man because all of us have a penis, and therefore COULD rape and abuse a woman. Which unfortunately has mutated into this baseless hatred of every single man BECAUSE we have a penis and therefore WILL rape and abuse EVERY SINGLE WOMAN WE SEE given the chance.
She believes that games like RapeLay and other forms of media that illustrate (though not necessarliy condone) rape embody a metaphorical sledgehammer that would send our fragile male psyches careening into the depths of being a deranged mad serial murderer/rapist were we ever exposed to it.
The thought/fear that men will revert to slathering lustful goons if we see anything remotely sexually explicit is most likely one of the driving forces behind our puritanical "hush-hush"ing of sex.
The normal knee-jerk reaction from people like Sisterpants who want to dictate their morality onto everyone else is to attempt to suppress these things to keep the "impressionable" members of society from being exposed to them and thus may deviate from the morality the knee-jerk reactionaries like to espouse. God forbid someone has a different opinion or worldview. It's amazing that we've actually accomplished legal gay marriages in several states considering the percentage of our population that are convinced they agree with the moralists.
They want to keep things from changing because they fear they will no longer be able to control things in the same way they do now. Everyone in power wants to keep it, no one has ever freely abdicated a position of power, and no one ever will.
The arguments of "is rape a worse crime than murder?" are irrelevant. Both are horrible, horrible things that one human can do to another, end of story.
The real argument that I can see is: how detailed of a virtual experience can one craft before it is inappropriately gratuitous?
Like the point the_root_of_all_evil was trying to make in his theoretical "murder simulation" game, where you actually have to PLAN to murder someone, you have to STALK them, you have to get your victim in a VULNERABLE situation, and THEN you attack them, and have to watch as the life drains out of their eyes. That involves you as the player in the murder MUCH more than "point gun, press left mouse button to fire"
the_root_of_all_evil's theoretical game impacts you psychologically as a person.
If RapeLay has THAT level of involvement in the actions of your character, then there is something wrong with the people who get enjoyment out of playing it.
Pre-meditated violence is one of the most traumatic acts for the perpetrator.
Is RapeLay a pre-meditated violence simulator? From what I have heard, I don't feel that it is.
Now, onto the argument that banning things because they may incite someone to perform the simulated act in public gives people the excuse that they were influenced by the banned material.
OF COURSE IT DOES.
If you are in favor of banning Hostel because it depicts acts of heinous violence perpetrated on another human being, you are giving the next sadistic violent murderer the ABILITY to claim that seeing the movie Hostel made them do it.
You are allowing violent people to blame violent media for their violence, because OBVIOUSLY the abusive alcoholic husband would have NEVER thought to beat his wife and children if he hadn't read "Who's Afraid of Virginia Woolf" in High School, or watched any of the films produced in the last SIXTY YEARS that depict abusive alcoholic husbands.
The minute you ban something because it MIGHT influence someone's behavior in real life you are giving them the EXCUSE that it does.
Okay, that was a bit longer than I expected to write, but I think it covers at least most of the points people have brought up over the past 5 pages.