You can abort a rocket launch before it takes off.
You can abort any number of acts before they happen.
It is solely your opinion that dictates your belief you cannot abort life that has not been conceived because this is what the church has told you, this is what society has told you, this is what justify's your lifestyle or any number of other reasons. If you are having sex as a married couple and using some kind of birth control, you are aborting life.
For instance, if we were suddenly down to 250,000 people world wide, you can bet the birth rate would sky rocket.
We don't need more people. We're not having more people. People are choosing to not have more children. Married people, Christians, everyone. It's all a choice.