I'm not in favor of forcing women to do that, which is why I didn't say that, but I do think that the availability should probably be there.Forcing women to see their fetus on ultrasound just means that you are force-tripping their emotions in order to trick them into something that they really never wanted, and probably won't want once they have their senses back again - after the birth.
Also, it's a bit unrealistic to say that all unwanted pregnancies result in perpetually "unwanted" children. My ex-gf from years ago, for example. She screwed around and got pregnant, but I'll give her credit that she didn't abort the child because of her mistakes. She has since gotten married and had another child with her now-husband. Both kids are in a very loving environment, and I know for a fact that that little boy does not feel unwanted or burdensome. Why? Because she sucked it up and loved her child. Sure, that doesn't happen in every case, but it's equally naive to think that parents will never love their 'unplanned' children.
Other examples: My dad's mother was advised to seek an abortion, which would have been illegal. She gave birth anyway and died shortly after, but our entire family is the result. My sister had to have her triplets at 23 1/2 weeks, and the doctors gave them 0% chance of any surviving. We're celebrating their 3rd birthday in September, and they've mostly caught up to their peers in development. Also, I was an oops baby, as my parents had had difficulty conceiving and had pretty much given up on having a third.