> Astrology works
Citation needed. Even agreement between the astrologers was low, which is a strong argument that it doesn't work even if you believe in it. That is, the patterns "predicted" by astrology simply do not exist; individuals cannot reliably reinforce their behavior based on expected behavior because there is no agreement on what the expected behavior is.
> most doctors don't perform much better than these astrologers in my experience
I mean, we've all had bad experiences with doctors, but this is comparing apples to wooden spheres painted red. I have had doctors successfully treat patients many times, including such things as prescribing antibiotics and succesfully delivering children.