A purely theoretical situation.

[rinnia]

Your neighbor gets her hair cut. She tells you that the salon is either going to throw her hair out or give it to wigmakers to benefit those suffering from cancer. "It's up to you," she finishes, "to decide what happens."

Which do you vote for?

Now imagine that instead of being wig material, her hair contains a compound that could help cure cancer. Do you let scientists do research with it to advance medicine and save lives, or do you tell the salon to burn it?

One more question - if the cut-off hair was instead a mass of fetal cells, would your answer change? I don't see any reason why it should.