I respect your thought process you just stated. However, I think it requires additional consideration as the debate is not only about religious beliefs.
I too believe in separation of church and state. Being that people who disagree with me will focus on the religious aspect - and ignore the other reasons for my beliefs, perhaps it would have been fully appropriate not to divulge the religious aspect that I included. The other reasons are significant, in fact more significant than my religious beliefs. One need not be religious to believe murder is wrong. Terminating a growing human life is not so different, I believe. I am reasonable enough to understand that I do not know the extent of my own ignorance regarding real differences between murdering a fully developed human and terminating the life of a fetus. Therefore, I do not protest at abortion clinics - or even so much as criticize women who have had abortions. I wish a great many others could be as reasonable.
The debate is multi-faceted and nuanced, and people on both sides try to make it simple. We talk past each other because of it. This is true in so many other controversial issues.
I have enormous empathy for women who are faced with the decision to keep, abort or give up for adoption their babies. I completely agree with a woman's right to make decisions about her own body. However, I believe things change, drastically, when considering a developing human being growing inside the woman's body. There is simply nothing unreasonable with this opinion, given the information any of us has regarding the true "personhood" of a fetus. And this opinion need not be limited to women to be valid.
I know people won't like what I say next, but it's something my mother told me when I was a young child after I had asked about abortion - and it has been important to me. I had asked by my mom what pro-life and pro-choice were - and why was my mom pro-life. What she told me has stuck with me. She explained what both was and said, "I'm really pro-choice. I'm for the choice people make before getting pregnant". People don't like this type of "argument", but it wasn't obviously an argument to my young mind. It was a lesson, and it was one I think was valuable to me both as a young boy and continued on into adulthood. My respect for women stems, perhaps completely, from both my parents.
My beliefs regarding abortion were not derived because of some evil. I think the same is true for most who share my views, including the conservative justices on the Supreme Court. Those justices do not deserve the criticism - and worse, harassment, that they have experienced recently.
We have a democratic process, and if it is the will of the people of any state - or even federally, there is a straightforward democratic process to legalize abortion. The SCOTUS supported that process, not worked against it. Religious beliefs need not be a factor in any legislation regarding abortion.