Abortion refers to the removal of fetus or embryo and hence ending the pregnancy.

Arguments in favor of Arguments opposing
It ends the pregnancy.
In the case of unwanted pregnancy, abortion provides a mean to end it. Abortion may have negative impact on mental and physical health of the pregnant women.
It ends the life of fetus or embryo.
The birth of a child may not be desirable if the parents are not prepared to have a child. Ending a life is generally not perceived as a positive outcome.

Competing Views...

Pope Francis: "It is not ‘progressive’ to try to resolve problems by eliminating a human life.", Apostolic Exhortation, 24 Nov 2013, [URL]
Mother Teresa: "But I feel that the greatest destroyer of peace today is abortion, because it is a war against the child, a direct killing of the innocent child, murder by the mother herself.", National Prayer Breakfast speech, Washington, D.C. (3 February 1994)., [URL]
Ronald Reagan: "With regard to the freedom of the individual for choice with regard to abortion, there's one individual who's not being considered at all. That's the one who is being aborted. And I've noticed that everybody that is for abortion has already been born.", Anderson-Reagan Presidential Debate (21 September 1980), [URL]

Invite your friends to join this conversation!