lol so you think 'people' magically spawn out of fetuses? kek
No, but people also spawn out of semen and eggs, or secondary, mid-meiosis spermatocytes, or just all the macromolecules consumed by the mother and used by the fetus.
The teleological argument against abortion is nonsensical. Fetuses and zygotes eventually turn into people, but that doesn't make them any more human than a sperm, an egg, a cell starting meiosis, or the food eaten to produce the cell. All of those eventually turn into people given the right circumstances and signaling.
The only reason people draw the line at conception is because of religion. Fundamentalist Christians believe that the 'soul' (an unmeasurable, religious thing which we're constitutionally bound from making laws based on) comes into existence during fertilization. But what biological differences can you identify between a zygote and a skin cell? Does it think more? Does it feel more? Does it know it exists? The answer to all of these things is no.
The only difference is that a fertilized egg has a genome different than both parents, but remember that the same thing applies to a skin cancer lesion too. That doesn't count as a 'different person' just because there is different DNA.
Poll