In other words, you don’t like the Federal government telling states what to do, but it’s perfectly okay for the states to tell individuals what to do.
A woman’s right to decide what she does with her body is hers and not the state’s, or anyone else is her family. (It’s a difficult situation for a couple to deal with and there should be a deep discussion, but the woman’s decision still has to be final.)
The idea of moving to another state is a function of money, education and connections. There are millions of people who can’t easily do what you suggest.
What we will have instead, as has been documented, is an increase in illegal abortions done in unsafe conditions resulting in thousands of unnecessary deaths:
Estimates of the number of illegal abortions in the United States during the 1950s and 1960s range from 200,000 to 1.2 million per year. Prior to Roe v. Wade, as many as 5,000 American women died annually as a direct result of unsafe abortions.