I am a massive fan of female protagonist adult games and feel there are never enough of them sadly, especially when looking outside of the censored Japanese market and also wanting rape. Of course, I am a bit more particular than most, since I also find RPGs to be boring and VNs to be even worse, plus text-based games tend to bore me. So essentially, outside of a few rare outliers, it is hard to find an adult game for me to appreciate.
The reason why I like female protagonist is because it is similar to the mindset I have when playing normal games. I am a massive fan of stuff like Thief: The Dark Project, meaning against the normal trend of gaming I tend to prefer a sense of powerlessness. I like a world which is a challenge to survive in, not one that I am some God who can do everything, and feel that male protag games are just focusing on the power fantasy mindset of getting hot women.
I should note I do not play adult games to "get off", they are just my preferred genre, and therefore I end up in this sort of contradictory world where adult games are either extremely easy by default or nerfed because "we have normal games for that". I personally get bothered by most normal games, finding them highly unstable (such as Skyrim), so my goal is mostly in trying to find that one game that can provide entertainment. In the meantime, I have at least some titles going in the right direction. Anything is better than story focused VNs.
The former is to explain that my favorite type of game is exactly what most tend to decry, the infamous rape on defeat. I enjoy making it a goal to ensure the virginity of my hero remains intact, in trying to get through the world without encountering a sex scene, as contradictory to the genre as it sounds. It just is a challenge that doesn't exist in most games outside of something like Skyrim, a sort of alternative to death (which cannot be continued from) while holding consequences.
There is no needing to relate to a character for me. I have tried male protagonist games, but almost always just find them inferior, same as when the female is less chaste than I would desire. For example, Melty's Quest may have a great corruption system, but the point is moot when she starts out more slutty than a nun would be. Total Seduction is alright as a male, mainly as you can focus on the challenge of min-maxing in so many days, but overall it just isn't the same.
Note I get really bothered if the game isn't with a chaste female lead. Slutty females avoiding sex are possibly the most offensive category, it gives a sort of "I want the amazing muscular guy to fuck me, not the ugly goblins on the road". It is for this reason I get bothered by things like Heroine Rescue Quest. Great mechanics, except being too easy, but then when the whole mindset is slaughtering people too pathetic for you so that you can have sex with those you deem worthy, it just gets depressing for me.
I also find lesbian oriented games boring. The stakes aren't the same with lesbians since the most they can do is fondle, there is just something greater about the stakes when people can ejaculate inside you. There has been some promising games out there, but sadly they were lesbian only and therefore boring to me. I am perfectly fine with being the only female in a society of hyper sexualized males that want to rape me.