"it is not ok to kill children for you own self gain."

this is the main point. these are not children. these are a few cells in pretty much the same form as flu. no shape or form. just a batch of cells. not a child. not with thought or feeling. bacteria don't scream when you bleach the toilet.

they have no chance of ever becoming children either.

they're equavilent is a brain dead human on life support. technically alive. but not really alive in the common sense. no brain function. no pain, emotion or thought. breathes and has a heart beat but isn't really alive.