I was reading Cosmos by Carl Sagan recently, and he had such animosity for Astrology. Like he stated in the book, it's depressing to be asked "what's your sign?" in social settings, knowing that it is complete bullshit, but that person is still going to judge your character based on your sign regardless.

That's why I am not afraid to call out those that buy into Astrology. Obviously I don't get rude about it, but I inform them that it's ancient psuedoscience based entirely on the belief that the solar system was geocentric. If you want to entertain yourself with it, that's fine. But don't you dare start telling me how unfun I must be because I happen to be Pisces.