Ok well id say it depends on the age, like if you get a girl pregnant at a younger age i think it would be smart to get the abortion for even financial reasons. The child probably wouldn't get the attention it needs which might even effect the childs later habits and attitute, and it will make the life of the "parents" at a young age very challenging especially if they don't have the right help to do it. But that should be more or less avoided if the right steps are taken of course,
All in all for those reasons id say it would have to be legal.