Look,
I can kind of understand your concerns based on the information you've been given, but you need to understand some things about the game:
1. This prostitution thing is blown way out of proportion. It's meant as an easter egg of sorts. There is no point in the game where it is vital or even necessary to do it. It's your own choice.
2. Vice City isn't based on points. You don't get 'points', or money for having sex with prostitutes, it costs you money. The game is not so simple as to be about the accquisition of 'points' or money.
3. Your health is regained by using the services of a prostitute, that's the only benefit, and it's pretty insignificant. There are health pickups in plenty of places throughout the city.
What you really need to realize is that games are more complicated nowadays than they were in '96. Vice City is a game not unlike a movie, in many ways. It's like a gritty crime drama, set against the pastel backdrop of 80's Miami. And just like any good crime drama, the violence is not gratuitous. Of course, it seems like it, taken out of context, but the game has a very rich plot, whether you choose to accept that or not.
In the future, I strongly suggest that you actually research these things, rather than flying off the handle at one little thing put in as a joke. Nobody is buying the game to see a car squeaking up and down on its shocks.
Now, it's true that there's a lot of content that small children probably shouldn't see until they're older, but that's the parents' problem. If you have such a huge problem with this game, then don't let your kids play it. Better yet, check it out yourself to see if it's really as awful as you think before you go talking about how we need school-based programs to stamp games out.
Furthermore, I'm extremely disappointed in you peoples' opinion of my generation. Do you really think that we can't tell the difference between reality and fiction? All of this talk about how games bring out violence in kids is ridiculous, and for the most part, unfounded. The studies have all been fundamentally flawed.
This one passage in particular from your "more information" page sticks out.
"10. Write to your local and national elected officials and ask them to sponsor legislation to make this kind of violence against women in computer video games illegal. Remind them that it is already illegal to put that kind of violence in X rated porno films. Ask them why it is illegal to have ADULTS see that kind of violence depicted in an X rated movie but not illegal for people to make a computer video game kids can play that shows that kind of violence. Ask them if this kind of violent act in a computer video game is any less destructive to the person seeing it than seeing the same violence in an Adult X rated movie?."
I agree fully that rape porn is bad stuff. However, the rape that's been claimed to be shown in vice city doesn't exist! There is no rape in the game, at all. This claim is, frankly, made up, to stir people up further.
This brings us back to this issue: The prostitution shown in vice city is completely insignificant to the rest of the game. It has absolutely nothing to do with gameplay, and is basically just a touch of realism (the fact that you CAN have a prostitute).
In closing, play the game before you judge it. If you still find that you don't want your kids playing it, then don't let them play it. Maybe it'd be better for you to spend less time campaigning against violent games, and more time explaining to your kids why you don't think they should see this.
Henry