In fact, you'll survive longer and live better because the commercial agriculture will be mass growing monocultures, gradually reducing their soil quality (eventually making the soil barren), and providing less variety of vitamins and nutrients.
The ability to consider contradictory propositions often leads to insights. No one is asking you to give up your television. Rather, one might suggest that considering previously unknown drawbacks of obviously beneficial customs might lead to further improvements in those customs.
In fact, you'll survive longer and live better because the commercial agriculture will be mass growing monocultures, gradually reducing their soil quality (eventually making the soil barren), and providing less variety of vitamins and nutrients.