science has proven otherwise, but let me ask when do define a child as becoming a life form
When they're out of the womb/ready to come out/kicking. Science is nothing here - it's all opinion meanings.
Life according to the Oxford:
The period between the birth and death of a living thing, especially a human being.
Roughly is the key word here. It's great that you use Weathermen as an example because Weathermen are so often wrong on the details. Also, Weathermen often predict ahead in a matter of days. You are saying we can predict human life over a matter of decades. This is not possible for there are too many variables, I don't care how many statistics you think you have.
Roughly is an understatement - pretty well would be a better word to describe. And we're not predicting details - what they'll be, what exactly they're going to do, just if they will be bad or good and whether their life will be bad or good (almost certainly bad considering that if they want abortion in the first place, they don't want their child). Weathermen aren't made to get the details exact, and anyone who dœs is pretty gullible to believe them.
It's not murder - they have no brain, their version of life is basically seeing some light flashes halfway through pregnancy, and having literally almost no cognition to determine what these light flashes are. By your definition, killing earthworms is murder.
No brain was a hyperbole - notice I said literally almost no cognition.
I was referring to the chance to live. As in, the right to actually be born and get a run at life without being murdered by your own parents.
If someone else is eating pizza, you'll want pizza, too. If pizza isn't nearby or if pizza dœsn't exist (god forbid) then you won't want pizza. Same with life - if you don't know it exists (and know almost nothing, literally), then you won't be jealous.