I don't think 4 or 8 cells is a human being at that point it's not different from a tumor - cells which can change into everything.

It sounds to me that the question should be why abortion is wanted. There must be a very good reason for it and it sounds to me the lack of support by the father, parents, society in combination with a lack of money are the main reasons.

I think as a girl/woman we all know how easily we can be taljed/forced into doing what we don't like. There's a small chance a girl will win from a boy/man.

Perhaps free anticonception pills is a good start and make men pay?