what is an arguement against non embryonic stem cell research?

Answer 1

There isn't one. No one tries to argue against non-embryonic stem cell research. Unfortunately, many people don't know there it exists. This is unfortunate because ALL successful stem cell research to date has involved non-embryonic stem cells. If most people understood that, the debate would go away.

Answer 2

The cell yield is lower than embryonic stem cells. I my opinion, non-embryonic is the way to go. No ethical issues. You aren't destroying products of human conception etc etc. No religious arguments.