Food surpluses

Back in the day they had to hunt and gather for food until they could feed their family. The people had to start farming to provide for their family  food for themselves. Others soon started catching on and soon many families had food food surpluses- or too much food. Having a food surplus made it possible for families to have more than one child because they have enough food to feed their families. I think this is important because without men and women being farmers. Do you think it is important?