Well, people can die if they have too many or too little of neighbors, but they can't be summoned from a thin air if they have just enough neighbors. Hard to simulate life with people. Though if you are ready for a simulation step of 20 years or so... But it still may not work, because you need people of two opposing sexes and compatible genders near the empty sell to fill it. In Game of Life all cells are hermaphrodites.

But I agree mistakes might be fun to watch.