Is there a reason to avoid the Prostitute Class?

The wiki said it contributes to a Bad End, but I have yet to find what that ending would be.  The game claims that your combat skills are no longer as sharp as they were, but I'm not seeing any mechanical changes supporting that.   My Skill points all seem to be right where I place them and my stats don't seem to have taken a hit either.

Is there any reason not to just work the brothel to grind money like crazy, other than the aesthetic change?

UPDATE: So, something I stupidly ignored and am now starting to actually feel relatively late game is that Prostitute Class aside, grinding money in the brothel will tank your purity and dignity extremely hard, which isn't an immediate problem but starts becoming a concern when you meet characters like the Ettin and Dark Knight who will actually punish you for that.

You don't get any money in brothel when you're a whore, you even pay for being used up. So, yes, there are drawbacks.