It isn't sex by itself that makes abortion. It is sex plus covetousness: desiring things that God does not will for us to have because we are not willing to find our satisfaction in him. Illicit sex and unencumbered freedom without children: for these we covet, and abortion is the result.
John PiperThe greatest cause in the world is joyfully rescuing people from hell, meeting their earthly needs, making them glad in God, and doing it with a kind, serious pleasure that makes Christ look like the Treasure he is.
John Piper