--The 'cell' created by the joining of egg and sperm becomes what it was meant to be from inception.--
Not always. Sometimes they split into two indiviuals, sometimes two individuals fuse and become one with two sets of DNA. Does this person have two souls?
It would be very interesting if you stopped asking obfuscating questions and ANSWERED some.
This last is biting you in the butt.
If the 'cell' ( that you say is not a human being ) splits, it becomes TWO human beings. Not two livers or kidneys or tumors.
Answer my question- what other 'cell' in the human body will turn into a completely separate human being?
The meeting of sperm and egg becomes a 'cell' like no other.
A cell from your fingernail contains your DNA, but it won't become a baby, even if you insert it into the womb.
A fertilized egg can produce more than one human being, it can produce a deformed human being, but it can be nothing other than a human being.
To compare a fertilized human egg to any other 'cell'in the human body is ignorant.
Abortions are not needed to remove unwanted 'cell's'. NO one is pregnant with a 'cell'. 9 months later, a 'cell' is not born. Just the one, particular 'cell' produced by sperm fertilizing egg. And that 'cell' can be nothing BUT a human being. Humans don't produce dogs or cats or chimpanzees- they produce human babies. Always have, always will. No getting around that- no matter what semantics you hide behind.
I'd respect people like you- even people who are pro-abortion- more if you had the guts to say 'Yes, it's a baby, and I don't want it.( insert reason) Kill it.'
Creative definitions do not negate biology.