I argue that people with opinions about what constitute life, do not have the right to exert their opinions on such a serious matter.
Since they cannot demonstrate with sufficient certainly that life has not begun from the time a cell starts to divide, they should leave that decision alone, and allow "natural processes" to take their course.
An animal tries to impregnate its mate, for the purpose of carrying on its lineage.
That's the purpose of sex - procreation.
Birds do not build their nest for nothing.
Humans' promiscuous and selfish behavior should not be an excuse to have the right to be supported by people with opinions.
Would your argument change, if it was found that the fetus is conscious prior to 20 weeks... 10 weeks... 5?
Current neuroscientific evidence indicates the possibility of fetal pain perception during the first trimester
I doubt very much that would change the view of people interested in supporting their view based on personal feelings.