To each their own. You can avoid the slaves if you'd like, there's not much they can do about essentially being raped. Plus they are hundreds of years old, but I still made Lin a virgin. Though most real women are not going to be virgins when you meet them unless they're under 18, so the amount of virgins in game is already quite unrealistic. Maria has had a fairly normal past considering the real world. She has a body count of like... 3 to 5? All that's written is that she has an ex and has experience in blowjobs IIRC