I don't have any objection to abortion as a thing. For me it comes down to if abortion is a acceptable form of birth control. I knew a chick who'd had 15 abortions. For her, this was birth control. Apparently she didn't believe in "conception control."
That's the rub - all forms of birth control should be re-branded "conception control" and leave "birth control" as a term applied only to surgical or chemical methods of stopping the process once it has begun.
Except not all forms of birth control prevent conception. There are a couple that work, in part, by inhibiting implantation of a fertilized egg.
As to the question of when life begins? For the "abortion on demand" people, it's defined as when the newborn breathes our air. For the "life begins at conception" crowd, it's the moment the human egg is fertilized. Is there a place somewhere in between these, where people can agree?
I lean towards abortion never being banned or criminalized again. But I also don't think it should ever be considered a acceptable form of birth control - first of all it's not the safest procedure in the world for the mother either. It should be much more rare than it currently is. How we get there is another question entirely.
Colorado had a little experiment. Funded privately, they distributed the 10-year IUD (one of those that doesn't necessarily block conception, but makes the uterus unsuitable for a pregnancy) to at risk populations. Over a span of just 4 years their abortion rate in the age group of 15 - 19 years dropped by 42%, and in the age group of 20 - 24 the decline was 18%.
Of course, when a vote came up to continue this program with taxpayer money it was shot down.
The reality is, both sides say they want a solution to the abortion issue but neither side actually wants the issue to go away. This is one of the few issues that casts votes all by itself. Without this, both sides risk losing voters. It's been 40 years since Roe v. Wade, and they'll gladly let this battle play out for years.
Based on Colorado's small sample, instituting such a program nationwide would reduce the number of abortions by 13% in just 4 years, and the number would undoubtedly be greater over a longer stretch of time given that women in their 20's account for over half of all abortions. Free 10-year IUD at the ages of 15-19 and you're knocking a shit ton of abortions down over the next 10 years.
Seriously, with a reduction that great in such a short period of time how can either party oppose?