Disclaimer: I am pro-choice, so don't get me wrong when I try to advocate for the opposition.
1)
It is more practical. A child is not a functioning member of society, and has to be developed (which requires time and $$$
) : It's true that the baby doesn't make money; however, the child will promote trade and create a higher demand of products produced. Thus, economically important. While it takes time for the child to become developed, speaking financially only, the child will certainly yield more money from the time it's born to the time it dies naturally than the woman will from the time she's pregnant to the time she dies of natural causes. So in that sense, it would be more practical to have the child introduced into the world.
2) People can and do argue that a fetus within the mother are already conscious beings. There are little to no evidence which supports a child while still in the mother is oblivious to pretty much everything, but say 1 month later, the child becomes conscious to the world around it. And it certainly doesn't happen instantly after it leaves the mother (not that I am insinuating that you are proposing that).
3)...I feel like you have a deeper reason to say that, but until I know exactly what you are trying to say, I am not going to spend time trying to refute a point that I am not sure you are making.
And if it's completely false, when do you believe a child is fully aware of everything?