Human beings are not a shred of tissue carrying DNA. Tissue like that can be propagated in a lab - I do it every day. Human beings are a full and complete organism, with toes and teeth, a fully-organed body - and most importantly, a brain. At conception, there's little more organism there than the bacteria you spray off the counter with a little bleach. To pretend otherwise is disingenuous and dishonest. Human beings are special, but not by virtue of little strands of genetic code in and of themselves. Stop trying to legislate it otherwise.