Yes, indeed it is morally tricky, and I'm not normally all that black-and-white of a person. If there were no other options but to perform a D&X, then I might think differently.
And to be very real here, there aren't a lot of these procedures being done, but, of those being done, not all of them are being done for sympathetic reasons such as anencephaly. Now should I trust wikipedia? Hmmm,
But if I can then here are the stats they quote:
In 1987, the Alan Guttmacher Institute collected questionnaires from 1,900 women in the United States who came to clinics to have abortions. Of the 1,900 questioned, 420 had been pregnant for 16 or more weeks. These 420 women were asked to choose among a list of reasons they had not obtained the abortions earlier in their pregnancies. The results were as follows:
* 71% Woman didn't recognize she was pregnant or misjudged gestation
* 48% Woman found it hard to make arrangements for abortion
* 33% Woman was afraid to tell her partner or parents
* 24% Woman took time to decide to have an abortion
* 8% Woman waited for her relationship to change
* 8% Someone pressured woman not to have abortion
* 6% Something changed after woman became pregnant
* 6% Woman didn't know timing is important
* 5% Woman didn't know she could get an abortion
* 2% A fetal problem was diagnosed late in pregnancy
* 11% Other
That's fwiw. My point being this scenario we're "arguing" over is a very rare one indeed (especially if the stats are to be trusted).
Or to take it in the other direction, why was shooting Tiller wrong if shooting potential murderers in church isn't?
Well, I'm sure this was the twisted reasoning behind the criminal who shot this doctor. Why I find it wrong is that you cannot act outside of the law. This isn't war. I may find what Tiller promoted to be morally wrong and even repugnant, and I may cringe at the thought of babies being aborted. But I have a moral responsibility to act within the laws of my society to work to bring about the desired change I'd like to see happen. I don't get to play God.
IOW, I don't get to kill Tiller because I think what he does is wrong and takes innocent lives. I can work to elect representatives who will ban the D&X procedure. I can lobby, I can picket, I can give money to organizations who do all of those things. But the minute I bomb an abortion clinic or kill an abortion doctor, then my actions are no better than their actions.
Until our laws say that a person has rights beginning at conception or 3 months or 7 months (which I doubt will ever happen), then the standard is that a person has rights beginning at birth. Therefore, that's the point at which things can be done to protect that person's rights, e.g., the (odd) scenario of a crazy person threatening the life of a newborn in which someone would be lawfully justified in killing the crazy person to save the baby's life.