Depending on your climate, food is one of the most pressing thing to acquire if you don't have it. Our human system right now is becoming fragile, because having such a large apparatus around food production and such a small number of people who practice it, a disruption could cause massive starvation. I personally would prefer not to see our species decimated as a result of insufficient latent food production ability not dependent on a massive industrialized base. It is not sufficient for people to learn how to grow in the event of an emergency; you need practice, growing food is not as easy as it seems.
In addition to making our species less fragile, it forces people to eat better, encourages diversity of life, and done properly it makes the environment more attractive.
Would you rather have more people trying to sell you shit?