There are 4 differences between the unborn and other people.

1) Size 2) Level of Development 3) Environment 4) Degree of Dependency

None of these justify killing unborn babies. You wouldn't kill a kid just because he's smaller than his classmates, would you?

Also, physical and/or intellectual development has nothing to do with determining personhood outside the womb. It is equally insignificant for determining personhood inside the womb. Children are generally less developed than adults. People with developmental disabilities may be less developed than some children, and those with extraordinary mental capacity are no more human than those with lesser IQs. It is humanity, not brain capacity or arm strength that determines personhood.

And any attempt to disqualify unborn children from receiving their due rights of personhood because they live in a womb rather than in a room is dishonest and unjust. Location doesn't affect the personhood of those outside the womb, and it shouldn't affect the personhood of those inside the womb.

The issue of dependency may well be the one abortion supporters turn to most in their attempt to justify abortion. "Since a fetus can't survive on its own," they argue, "it has no inherent right to life". What's the problem with this argument? In the broadest sense, it could be applied to all of us. There isn't a person alive who is radically independent from the universe we live in. We all need food, water, rest, and oxygen. We're all vulnerable to a million different bodily breakdowns. Are those who must rely on kidney machines, pace-makers or insulin shots for their survival less deserving of basic human rights than anyone else? Some of us may be less dependent than others, but if it is dependence that strips away a person's right to protection under the law, then we would all be in trouble. Embryos and fetuses who must rely on an umbilical cord in the womb are just as human as those who must rely on a feeding tube outside the womb.

Perhaps the biggest absurdity about this whole attack on dependence is the fact that dependency should merit more protection under the law, not less! After all, the younger and more dependent a child is, the more care and compassion we have for them. The U.S. Office of Juvenille Justice and Delinquency Prevention expresses it well when they say, "Homicides are always tragic, but our sympathies are heightened when the victim is a young child or adolescent. Thus, the deaths of juveniles raise understandable public concerns." The nation is far more outraged at violence directed towards children than at violence directed towards other adults. The reason is simple. Children are more helpless, and less capable of defending themselves. And the younger the child is the truer this becomes. How we ever got to the place of using dependency against children rather than for children is a tragedy of staggering proportions.

All information from http://www.abort73.com/abortion/inconsequential_differences/