That's why so many ancient cultures made beer. Basically every culture that began eating grains immediately also started fermenting them into beer. It wasn't

That's why so many ancient cultures made beer. Basically every culture that began eating grains immediately also started fermenting them into beer. It wasn't for the alcohol, that was normally very low in c. 5000BC beer anyways. It was because people that consumed it were healthier than those that didn't. Fermentation is nutritius and beneficial beyond alcohol/calories/potable water.