If something can be made so easy, it's hard to believe that it's sacred.
Life become sacred as it develops: as it learns, as it socialises, as it benefits others and grows. To assume something is sacred just through it existing seems a bit silly, things should be respected through what's been achieved.
A typical argument is 'but a baby has no choice in the matter', but another can be just as easily created. It's more beneficial to society for babies to be born into loving, caring families, where they have a chance to grow up to be prosperous and successful, rather than being born to unfavourable circumstances: where there's a greater risk of them dragging down society.
Though I'm not trying to convert anyone here, this is simply my viewpoint. And I believe everybody should have the right to do what THEY think is best, not what anyone else thinks.
If my girlfriend decides to abort our baby, it has no bearing on your life, and quite frankly is none of your business.