Scripture tells me that "Anyone whose name was not found written in the book of life was thrown into the lake of fire." I don't see anything saying that "killers" are thrown into the Lake of Fire at final judgment.
Then you're not reading the full quote.
Here is the full quote:
And He who is sitting upon the throne said, "Lo, new I make all things"; and He saith to me, "Write, because these words are true and steadfast." And He said to me, "It hath been done! I am the Alpha and the Omega, the Beginning and the End; I, to him who is thirsting, will give of the fountain of the water of the life freely; he who is overcoming shall inherit all things, and I will be to him -- a God, and he shall be to me -- the son, and to fearful, and unsteadfast, and abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all the liars, their part [is] in the lake that is burning with fire and brimstone, which is a second death."
This is God speaking directly in the second-to-last chapter of the Bible. The list of those left out of the City of God is restated again in the last chapter. "Murderers" appears on both list.
Killers are thrown into Hell at final judgment. "You shall not kill" is a commandment that God formally stated first to Noah, again to the Hebrews at Sinai. Jesus said that the Law shall not pass away until the end. And God, speaking of the end at the very end of Scriptures, twice says that killers do not enter the City of God after judgment. They are thrown into the Lake of Fire for the second death.
Killing a baby is killing. And God clearly described human lives as beginning at their begetting by their father, which is conception. To intentionally kill a baby in the womb is to be a killer, and to be an unrepentant killer is to fail final judgment and to be damned by God to the flames of Hell. God said that.
So, if one wants to worm around to play serpent-tongued word games that pretend that aborting a baby is not intentionally killing a baby, we are all given free will, and we can all play that game for awhile. People foolish enough to believe the deception who then murder children in the womb and, convinced of the justification of their actions, never throw themselves to the ground before God pleading for him to forgive the murder they have committed: they will be thrown into Hell, just as Jesus promised twice on the last two pages of Scripture.
Killers fail judgment and are thrown into the fire.
Nobody can stop a man or woman who is determined to risk his soul for the convenience of slaughtering a baby in the womb. Nobody can stop ANY killer hellbent on killing. But without repentance, no killer can be saved from the fire. Telling God he has no right to exist or to judge at final judgment is not a winning strategy.
Why fight about abortion, then? Partly to save the babies. Partly to save the mothers and the abortion doctors and their allies from stupidly throwing their own souls away because they have been led astray by Satan.