Entirely anecdotal, but we're setting up for a fruit and vegetable garden next season. Having a portion of either with each meal was how we were raised, but doing so from the grocery is pushing our bill up a good $100 a month.
Overall this isn't much of a surprise. Since the industrial revolution, the production value of one worker has grown exponentially. Salaries, not so much. A prime side effect of this disparity is the demise of the stay at home parent. The ratio of people this was a reality for vs the ones it wasn't has entirely inverted. All this in a handful of generations.
A home garden should be more of a hobby than a requirement.