Value is of course a subjective thing, and I can't prove that an embryo's life is any less valuable than mine than you can prove an ant's life is any less valuable than yours. But lets look at what an embryo is... it's a non-conscious, never been conscious, unfeeling, unknowing, ball of genetic muck. Why be against using it for the benefit of creatures that are conscious,that are feeling pain, that know the world around them, and that are loved by many others?
I think i'm going to have to agree with your choice of username.
You can't disvalue and embryo's life because it has yet to experience 'Life'.
The argument you are making is illogical... why should an "embryo" which has the potential to experience life... be killed... and stopped from experiencing life for the sake of those who have already experienced it?
Thats like me justifying killing little babies for their organs by saying... "I've experienced more then them".
Embryos should have "legal" protection rights... as they are "alive" and have the "potential to... experience life"
I don't agree to embryonic stem cell research or "cloning"... (for the above reasons)
Research however on... constructing organs and vestiges and even reanimating dead nerves....
Are positive... and more funding should be allocated to such research.
...Life is valuable