In the animal kingdom animals murder each other all the time as well. So should murder be legal?
For example, a male lion will kill another male lion taking his "property". If the dead lion had cubs he will also murder them.
So, I guess since we are just animals, I can walk into my next door neighbor's house and murder him and his family, correct? After all, we are just animals.
A lot of things have been "legal" and they shouldn't of been. Slavery is a pretty good example. Should Americans have just "dealt" with it since it was legal?
So abortion would still happen if it were illegal, so what. Murder is illegal and it still happen. So should we just legalize it?
And what about another unalienable right, life?
"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness."