Interesting. I don't read it as necessarily a judgment of value at all to be told that I should never have been born (things that should not have happened may accidentally have good consequences). Additionally, someone who doesn't think that I should have been born, but also doesn't think I should die, will not try to kill me, though they may push policies that will prevent future additions to my salient reference class; someone who thinks I should die could try to make that happen!