1. Roe v Wade. I think that whether you are pro- or anti-, a careful reading of that decision reveals that it is a horrible piece of judicial quackery. First, it was decided that a right to privacy was implied by the Constitution... okay, maybe that isn't unreasonable itself, but then that right to privacy was extended like a rubber band pulled to the limit to say that society had no intrest in what took place between a woman and her doctor, even if in the process what was arguably a human life was terminated. Bad law.
An even worse example was when a state supreme court (Mass? RI? I forget) decided somehow that their state constitution DEMANDED a law allowing homosexual marriage, even though their State Const did not contain the words "homosexual marriage" and then told the legislature that they had X days to pass a new bill that made homosexual marriage legal. This was one of the most blatant cases of legislating from the bench that I recall.
Hm. Two liberal decisions. Interesting.
It was MA, by the way.
And the state constitution did contain the concept of equal protection, which, well, I think you know where I'm going with this...
Believe it or not, I acutally partially agree with you on Roe. The logic was a little tortured. The question really revolved around whether a fetus is a life (obviously). All Blackmun said was that scientists and philosophers have struggled with this for centuries, and the Court was in no position to resolve it either way. It was up to the conscience of the individual woman. Seems like the protection of freedom to me.
2. This is why we have a SCOTUS, but we also need to be aware that the SCOTUS is not a holy priesthood and is susceptible to politics. There are also other methods by which Constitutionality may be addressed, including the legislature's power to remove certain items from the purview of the SCOTUS. Yes it is a complicated issue, but that does not mean that an appeal to a judgement on the Constitutionality of a new law is somehow invalid... indeed it is necessary to maintaining a limited government, whose limitations are specified in the Constitution.