None of this matters if you believe that a microscopic embryo is a human being with the same human rights as you and me. George W. Bush claims to believe that, and you have to believe something like that to justify your opposition to stem-cell research. But Bush cannot possibly believe that embryos are full human beings, or he would surely oppose modern fertility procedures that create and destroy many embryos for each baby they bring into the world. Bush does not oppose modern fertility treatments. He even praised them in his anti-stem-cell speech.
The rest is pretty good too.