This is really true and I and my family can attest to it. We have been growing our own food for quite a long time and we planted even more since COVID-19 pandemic. During that time, people were directed to stay at home and thus, the homegrown vegetables are really big help to survive. Apart from this, you've mentioned of the satisfaction we get from it and yes, I agree. It's really satisfying to realize and experience that we are sure of the vegetables we are consuming - we are sure that they're safe and healthy and of course, that feeling of fulfillment that we are harvesting the fruit of our labor.
Happy gardening!