To suggest that killing a fetus at early stages is on par with killing a citizen, a born person is stupid. It says that thoughts, feelings, self-awareness, etc., things born people posses but fetuses don't are worthless and the only thing that gives human life value is the fact that it possesses the DNA to be called human.
Let's try this one again -but I'll try to use smaller words especially for you.
1. Birth ONLY determines when citizenship begins. But it does not ever determine when life begins. Citizenship brings certain rights that do not exist until one becomes a citizen. Like habeus corpus and the right to not be arrested for what you say, etc. However, a right to keep one's life isn't one that is granted upon or hinges upon citizenship. Which is why it isn't legal to kill a visiting foreigner. The right of someone to keep their life is a human right. Pretending there is actually an age restriction to that right is merely age discrimination of the most lethal sort. What determines whether it is of value is the fact that human is ALIVE. Not what it happens to be doing with that life at the moment.
2. A fetus is not a plant, puppy or goldfish -it is a human life at all times. It is alive, biologically incapable of being anything but the human offspring of its parents -so it is a human life. That means no matter how old someone is -if they are killed, it is a human life that was killed. Lots and lots of people in the whole world consider it murder to kill a human life -no matter how old that human was at the time it was killed.
3. You either consider human life to be inherently valuable -or you don't. But for those who don't, it means drawing an arbitrary line in the sand and declaring "any and all human life younger than THIS may be killed -even by the millions and millions." Then you start to feel the pressure to move that line JUST a bit. Why not the severely handicapped? And just how "severe" is severe anyway -let's move that line too. If a fetus can be legally killed any time until the moment of birth (as is true in several states), then why not killed immediately after birth? Some people ARE pushing for that you know. All because that child still has no true self-awareness than it did right before its birth and won't yet for weeks, no concept of citizenship and won't for years, is incapable of seeing itself as a separate being from all others and has much less comprehension of the world than even a baby just a few months older. If you make that kind of distinction that the stage of development a human happens to be in determines the value of their life -then for YOU it really is true that the murder of a 2 yr. old is a much less crime than killing a teenager -which is still a lesser crime than killing an adult.
I have no such moral dilemma because I refuse to draw a line in the sand. I DON'T OWN THAT LIFE, therefore I have no right to make that determination about a life other than my own. Only the owner of a life may do that.
The fact that one stage of life is a universal stage of development for all humans cannot be used to justify the killing of anyone just because those who want to kill it are already past that stage of development. That makes no moral sense whatsoever.
No one can impart to you the ability to find human life to be inherently valuable. You either developed that long ago -or you are just incapable of doing so. But surely you can understand why those who are incapable of doing so are actually a pretty scary group to be running things. It doesn't work out too well for everyone else in the long run. History has repeatedly proven that when those who have decided they have the right to declare some human life to be of no real value and therefore disposable gain real power -it increases the threat from the state to ALL human life. Those who claim a "right" to decide that some humans are not entitled to even keep their own lives -only include ever more people who can be killed. Those at risk of being killed NEVER shrinks -it only continues expanding.