These same conditions also are common in seniors with Alzheimers or dementiaMurder of what? Generally speaking, not a functioning human that could survive outside of the womb. Sure, it has potential, but it requires a lot of work. It has no history, no memories, nobody ever met them, etc.
Or people in a coma
You do draw a line at viability outside the womb. Medically that is about 20-22 weeks, is that where you would cutoff abortion