That is extremely rude. Did you ever think maybe that they are portrayed differently in hentai, or maybe this is the result of stereotypes about them? Like, blondes have more fun, or blondes are stupid. Maybe you should think over how fucked up you are in saying that. Heck, my hair is blonde and I’m not gross, dumb, or stupid. I’m just randomly goofy. It’s not blondes that are disgusting, it’s the people who decided to call them that that are. And this goes for other things too. Hair color, skin color, eye color, and even race, none of that matters. We are ALL still human beings. So you should consider that you might not be getting off to animated women, and might actually get a girlfriend if you stop thinking like that.