You're very right. And growing food is not cheap either, the initial investment is on the hundreds, even for a small vegetable garden and it takes time for the plants to grow, the yield is very small, counting the loss to pest and critters and it's a daily effort to care for the plants. After all of this, there are people who leaves too far north and the season is too short, or in too dry area, the thing is a nightmare. I love doing my own vegetable garden, but damn, the farms market is much easier.