The rabbis taught: for two and a half years the academies of Shammai and Hillel debated, these arguing “it is preferable for man to not be created more than to be created”, and these arguing “it is preferable for man to be created more than to not be created”. They counted (voted) and concluded: “it is preferable for man to not be created more than to be created. Now that he was indeed created he should contemplate his actions. Alternatively, he should scrutinize his actions.” (Eruvin 13b)