The question is a bit off, the problem here is that it's not my life's work as I've done quite a bit of other interesting things in my life.
The project is less than a year old. In any case, I'll try and answer your question. Maybe it's interesting for other people to read as well.
With a passion for games and a fascination with naughty stuff, I've combined the two to create this game.
For me personally, the tags don't really matter. I don't see adult games any different from shooters/RPG's or whatever. They're all pretty mainstream.
The adult VN market is fairly new and I'd reckon the most success is to be had here because sex sells.
Sure you could say, make the next "Insert awesome game" but that's not that simple for indie game devs, even if if you do have a decent budget. The gaming market is very over-saturated and the competition is huge. It's difficult to get noticed at all.
Basically, this is a work of passion and just for fun. That's seriously what it is. NSFW or not, this whole game is a parody/satire sort of thing based on the likes of South Park/Leisure Suit Larry, and a bunch of other animes. Mixed with some serious scenes and lots of naughty stuff.
Why? Because I thought most of the adult games are sort of the same. I think I'm one of the few devs that took a different approach, although it's not always appreciated by the player. Which is fine. I made some posts about my thoughts on subscribe star, some are public posts. If you want to learn more about the "joys" of creating games, feel free to check them out. For any further questions, ask me on the Discord channel.
Short answer:
Although it takes a shit ton of work it's pretty fun.