One could argue it's self defense. And all you need for killing an adult to be self defense these days is "I feel threatened!".
Conservatives aren't against abortion because they believe it's murder, they're against it because they think they're preventing "White Genocide." According to them, poor people (i.e.: non-white people) don't get abortions because the more babies they have, the more welfare they get. Only white people get abortions so they can focus on their careers. So, if abortion is banned, that means more white babies born to people who can afford to raise them without collecting welfare and no other changes to society whatsoever. I have no evidence to support the above statement, but I know in my heart that it's true. If knowing something in one's heart is good enough for conservatives, then it's good enough for me.
I don't really have a clear opinion on whether it's murder or not. That's a complex moral and spiritual question. My position is that I don't care if it is, because it's necessary for societal and personal prosperity, and doesn't affect anyone beyond the person committing it.
That is a valid theory. However, I think it's more about economics. With a large poor population, corporations control wages. If there are more jobs than workers, then workers control wages. With 20+ years of war and women no longer needing men to support them, and people waking up ..., workers are gaining an upper hand with controlling wages. So, through Citizens United, the wealthy have ensured abortions are illegal so they can regain a large population of poor people so they can go back to controlling wages.
As for spirituality - I do not believe there is a "well of souls" with a limited supply. We are all part of the energy that surrounds the Earth and when we die, we return to that energy - until we decide to live a mortal life again. This is the one issue I have with going into space. If I die in space, where does my soul go?
Whether it’s murder or not depends on when the fetus becomes a person. I’ve stated my standard for that before . . . organized brainwave activity.
Even in live adult coma patients, scientists are still unsure what exactly is happening in the brain. Some coma patients wake up, some don't - even the ones with brain activity. That's not a true measure either. Experts have stated and has been the law for 4 decades, that a viable foetus is between 12 and 16 weeks gestation. and even then, there are still many things that can and do go wrong.
So-called liberty nuts haven't been able to explain to me how liberty of the fetus trumps the liberty of the woman without sounding like misogynists, or hypocrites, or both. Haven't been able to pull it off yet.
The mythological heartbeat in question is what is often referred to as 'fetal heartbeat' which is an electrical impulse that can be measured when a fertilized egg reaches 6 weeks gestation. it's not a heartbeat. that's the myth. it's the same electrical impulse anyone can get from a potato.
So could a woman actually get off on murder when abortion becomes murder by claiming self defense? All she has to do is pretend she was afraid in that moment and it would probably help if she claimed the father was black. Oh wait, I forgot, women are not valid people according to the right.
At six weeks, it's not even a fetus yet. But you're right that a heart hasn't even fully formed in a six week embryo.