The fact that people from different positions are even having a relatively rational conversation on this topic is a miracle. It was a long time coming. It is refreshing.
And yes, lots of cute little babies (tax-payers) will now be born that otherwise wouldn't be.
I see a lot of possible benefits here in the future:
1. People may start to reject the Hollywood concept of sex as being little more that a gymnastic exercise with a happy ending. People may be more apt to look before they leap. And, that's a good thing.
2. I think women will be more highly regarded in general, and less as objects of mere sexual desire.
3. Fathers should be made to pay for the financial responsibilities associated with child birth. Instead of chatting a woman up for some potential temporary physical relief, conversations may be more meaningful; like is this someone I want to possibly share a child with. Or, is she such a nut I need to run the other way...regardless of how good she looks.
As the price for sleeping around goes up, responsible relationships and marriages may go up as well.
The "viability" line of demarcation is a poor argument. It brings up more questions than answers. For instance, a one-year-old child still requires daily care. If parents went on vacation for a month and left their 12 month old baby at home in a crib, how long could he live? Does the child's death mean he wasn't viable?
How long must a child be able to survive outside the womb to be labelled "viable".