All western societies were dirt poor when they were feudal agricultural societies, the industry age changed the west. War maxaa ku haayo sxb? something that is worth 1 dollar by the kilo and the effort that goes into producing a kilo of it doesn't tell you this is not a economic driver.All of the west and America was initially an agrarian society. Sure with trade that's pointless but it's important to get our numbers up and to do that you need an abundance of cheap nutrient dense food.
Work out how much time is spent to produce a kilo of banana and then multiply that across a year using 8 hour work day multiplied by 50,000 workers. You can see what your net-gain is. It's going to be in the millions range not even billions. A good GDP needs to produce products that earn in the billion range