I have. I have no evidence that either pain killers or placebos work in any sort of medical sense; I have clear evidence that swallowing a pill causes me to relax, resulting in a immediate reduction in pain. This is stupid, and I am working on eliminating the pill, but still, if this is what works, I will continue to use it frequently until I find something better.

I think one of the major reasons that people dislike the idea of placebos is because they think that they are being medicine. This has not been my experience. Placebos are better than medicine, because they work directly on your mind, and your mind (my mind, anyway) is sometimes too stupid to pay attention to medicine. I would have been better off, and a bit wealthier, if a doctor had realized this before trying the medical route.