As for Roe v. Wade, I think the problem with reading the 14th Amendment as protecting a right to privacy is that the 14th isn't enough. We should be invoking the 9th Amendment as well, which explicitly covers unenumerated rights.
> The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.
This amendment exists specifically to counter the sort of mindset that thinks that rights come from God or the government, and that the Constitution wasn't written to enumerate and thus limit the powers of the Federal government.