Our Rabbis taught:
שתי שנים ומחצה נחלקו ב"ש וב"ה הללו אומרים
For two and a half years were Beth Shammai and Beth Hillel in dispute, the former asserting
נוח לו לאדם שלא נברא יותר משנברא והללו אומרים
that it were better for man not to have been created than to have been created, and the latter maintaining
נוח לו לאדם שנברא יותר משלא נברא
that it is better for man to have been created than not to have been created.
נמנו וגמרו
They finally took a vote and decided
נוח לו לאדם שלא נברא יותר משנברא עכשיו שנברא יפשפש במעשיו
that it were better for man not to have been created than to have been created, but now that he has been created, let him investigate his past deeds or,
ואמרי לה
as others say,
ימשמש במעשיו
let him examine his future actions.