Whats your opinion on stem cell research?

I do not agree with the blueprint ogy. The blueprint can be discarded after the house is built. After a baby is born, what happened to the blastula? The stem cells are the foundations for a house that will soon be built. Now suppose someone wanted to build a house, she then decides she doesn't want to build it and would rather donate the materials for some other purpose. Since it's a house, she can do whatever she wants with it. But what if it's a person? That's the real controversy.