Embryonic stem cell research? Life begins at conception. The embryo is a living human being in their embryonic stage of life. Not some tissue that can be used up and disposed of as we see fit!
Embryonic stem cell research is nothing more than human sacrifice, killing another human being for the hope of benefit to our life!
Instead of the sacrifice being in the name of a God of some religion, the killing is in the name of science, no matter what the reason the goal is the same to benefit someone else's life.
It is never OK to kill a human being, even if it will benefit our life!