Not to quibble but Roe v. Wade was a 7-2 vote. Its hard to believe that 7 members of the Supreme Court could find an imaginary right to abortion and only 5 could find the obvious right to keep and bear arms.
Wasn't that the Warren court? Or was Rehnquist the Chief Justice? In any event, it was a far more liberal court than today's.
Have you read the Roe v. Wade opinion? I read it in my business law class and thought it was totally illogical. I was really upset that seven adults agreed to it.