bombardier: The main point of all games is some type of conflict or obstacle you have to clear on your way.
In action games like Castle Wolfestein AI controls an army trying to kill you and you perform acts of self defense while escaping. Both sides of conflict are armed and prepared for a fight. AI is the one that attacks you on sight and gives you no other option but to fight.
There is very small number of games that actually turn this around and make you kill a defensless characters or require you to be the first to start the fight with innocent AI characters (Hitman).
On the other hand, adult video games are about tricking females into having sex with you. Here, you are a predator and defenseless female characters are your prey.
Do you really think this is the same thing?
I think it is a dishonest argument, actually. I'll leave aside your especially dishonest portrayal of adult games and address the rest. You know, or should know, full well that there are numerous (not just a few) games on this store where there is no option other than aggression initiated by the player character(s).
In fact, there are more such games where the player character is required to perform some sort of aggressive action to progress, than there are adult games total on this store. In many cases like political simulator games, said aggression may not even be perceptible to the average person, who has never pondered the mechanisms of it before. Of course, this is all fictional media, so much like one wouldn't show a toddler Game of Thrones, there is the option to avoid it while others who are more equipped to handle the content/themes are able to buy/play it.
bombardier: The game description of the latest game added on GOG actually proves my point.
"The girls in the game have different values and may or may not be attracted to you based on your choices. Can you resist the temptations along the way to get the girl of your dreams, or will you relent and just...experiment?"
From this description my expectation of the game mechanics is that I will be manipulating game world in a way that game allows me just to get a "yes" from the girl.
Am I wrong? Is there some other end game result?
Have you ever played a game with romance mechanics? It is basically how it works regardless of how explicit the content is, no different than having to choose between questlines in a roleplaying game. These characters are not autonomous real-life persons. Please answer how in the hell can the game (ANY game) possibly function other than by internal game logic where specific inputs give specific results?