I can accept that you have certain beliefs regarding humans, for instance that God has given humans the right to "life, liberty and the pursuit of happiness". Personally, I recognize those lines from the U.S. constitution. It's fine writing, it's just that it doesn't always happen in real life. But perhaps more important to this discussion, there's no logical reason to appraise human life above other forms of life just because of our DNA. Now, one could argue that, once developed past a certain stage of development, human life becomes one of the most intelligent life forms on earth, and I'd agree with that- but that stage of development happens -after- humans are born, not before.