Death will come either way naturaly, but forcing someone to die for your own concienience is, by any definition you attemt to semanticise, murder.
And I'll just say it before you're redundant brain starts spewing the same bullshit over and over again like it always does, a fetus is a human being, it does not have a personality, it may not have a heartbeat initially, it may not initially feel, it may not have arms or legs, also initially, but in a few weeks time it does, it grows, it does have arms and legs, a heart that beats and a personality is on the way. Granted in a culture fof godless death worship, the personality might end up like yours, so come to think of it maybe killing babies before they become like you isn't that bad of an idea.