Interesting question. Lets take your theory and apply it to other circumtances and see if it pans out.
Lets try rape. Why punish or keep a rapist from doing their thing...after all, they think it is fine to rape a person. We shouldn't judge. God will deal with this person.
How about stealing....lets not be judgemental, after all, we arent in the theif's shoes. We should force our morality on that person. God will deal with them.
Murder...same thing. Maybe they were driven to it by some awful circumstances...who are we to judge?
You see, some are sitting here saying that these offences are different because there is an unwilling victim. So there is in abortion also...just a victim that can't yell out for help or try to run away.
Far as abortion being a medical procedure...yes that is true and it is also true that it is the only procedure that does not have to be described in detail by the doctor before it takes place. Informed consent and all. And why do you think that is? Because if the patient is informed they would probably run for the hills.
And as far as imposing one's beliefs on others....the same can be said for the abortionists. After all, taxpayer money is spent to kill babies in this country and many of those taxpayers are against killing babies. Now that is truly imposing.