Science! It works (AGAIN) bitches!
You see, sickle cell anemia is an evolutionary adaptation (mistake even) in response to Malaria (a killer of MILLIONS). Now, to some, malaria is some sort of god(s) given punishment (or at the very least, the psychotic sky dady created it). You know, yet another very obvious sign of a loving and benevolent being... Anyway, with malaria being such a horrible disease, and it killing millions, it actually produces a very strong evolutionary tendency on quite a few folks who may have a random mutation that allows them to survive. Not that evolution is true though, right? So now we have scientists that come along, and use STEM CELLS to virtually cure this disease in 90% of the tested patients. Notice how prayed didn't play into this in the slightest (because prayed in no way works...). If anything, the scientists are fighting against god's creation, and winning! Suck on that you impotent imaginary skydaddy! :P And then the thing that really amused me... Most of the religious people in the world opposed stem cell research! Even after it was shown that fetal stem cells were not required, they still opposed stem cell research on some misguided principles that I just can't understand (like attempting to understand people who think the earth is flat).
So far, in all of history, no god(s) have ever healed an amputee. Eventually, I am quite sure that scientists will develop a method for humans to regrow severed limbs. Like I said, "Science! it works bitches!" So, if you are in a life threatening situation where science has the answer, what would you do?
(Waits for the standard apologetic's answers of skypsycho gave us brains, you can't measure prayer, we prayed for the scientists, etc... They are so predicatable.)