Roe v. Wade was a horrendous decision for many reasons, only one of them being that it trampled states' rights. This Oregon decision may be disagreeable from a purely pro-life standpoint, but the bottom line is that it should be up to the states to enact their own laws without Big Brother Fed'ral Gubmint coming in to stomp on what these elected legislators have done. It's up to pro-lifers in all states to elect more friendly local and state legislators, certainly, but demanding that the federal government intervene whenever your state's elected officials do something you don't like is conceding to socialism a big first step.
You'll find that most prolifers are very much in favor of states' rights.
But, there are transcendent principles, codified in the Bill of Rights, that trump states' rights.
Why is this so hard for you folks to understand?
If a state can overrule the right to life, it can overrule the right to every expression of liberty, and soon will.