Earlier quoted context omitted.
...because otherwise most of us would be dead. Or would never have lived, which is the same thing, kind of.
If anything had been slightly different whole other sets of sperm would have fertilized the egg, so that's not such an impressive argument. Especially since all of us will be dead at some point, regardless. And funny how that "compassion" doesn't extend to the people crushed every day, the people shrieking in anguish as we speak. The question isn't just how many people are "alive", but what life are they living. What…
The change will, of course, result in the near immediate death of, say, half of the people currently alive, including me. You get to explain to them what is going on (extra points for ending your speech with a dismissive "But, well, there you are."), but you also get to choose who is a "healthy person" and who is a "clone of an alienated person".
Go for it!