Can someone explain the benefits of outlawing abortion?

In the 49 years Roe v. Wade was in place, the crime rate in the U.S. plummeted, the overall standard of living went up, more people were educated, technology advanced, and women and minorities enjoyed greater equality. The U.S. also became the sole superpower. You can argue that none of these were related to abortion, but that suggests abortion has no effect on anything. Some of the negative outcomes of outlawing abortion could be:

Increase in the maternal death rate for women who needed abortions for their own health-related reasons
Increase in the infant death rate for children with genetic defects who otherwise would have been aborted
increase in abandoned children and "dumpster babies"
Increase in poverty and child abuse of unwanted children
Growth of a black market in abortion, from "back alley" clinics, drug dealers selling abortion pills, and legitimate doctors performing abortions for their patients
Lower birth rates as more women opt for sterilization out of fear that they won't be able to have an abortion if they need one

So what are the benefits? I'm not looking for abstract platitudes like "increased respect for life" or other vague pronouncements. Abortion is illegal in Guatemala, but I wouldn't point to that country as one where life is respected. I'm asking for specific, concrete benefits. This may be difficult as countries where abortion is illegal tend to have less individual liberty and prosperity than countries where it's legal or at least easily accessible (for example, abortion is illegal in Malta, but Maltese women have an abortion rate similar to other EU countries because they simply go to Italy for their abortions).