Braindrop I'm pretty sure you may have had similar thoughts going on in your head, but still - Here is some ammo, in case you ever have to deal with some of the things that your family throws at you. Even if what you are creating is an erotic game, its not even remotely similar to some other extreme things that conservative folk object to - i.e. porn.
First off, people play your game for the visual intrigue and ratings, but they stay because of the story and the bonds they are making with the characters in it. Secondly, no one real is getting exploited here (unless you count yourself for the many hours you generously put in for this game), and no one real is debasing themselves on screen. All the characters involved are fictional, and so are the fantasies that come with it - which means no one has to feel like they are cheating their spouse or w/e, because these characters are just not real and its easy to accept that.
These are just a few arguments i came up with just now, and I could go on, but the point is - you are an artist, in the real sense. You create a story, characters, evoke the right emotions in people, and also put in months of honest effort by yourself for a single release. True, there may be a few reasons for them to quibble about, but that would happen regardless of whatever you do in life. You are not exposing people to hurt, mentally or physically, and you are not regressing society and forcing them to accept their beastly desires. You are letting people experience bonds, friendships, and love that they may never have had, and that easily eclipses anything wrong that may be perceived of your game. That's all i had to say man. Stay healthy, mentally.