I could grow my own food. I sometimes do grow things like good tomatoes that money cannot buy. However I don't want to grow all my own food I know how to do this, and it is a lot of work.
People have this romantic notion of history thinking that nobody had to work, it was just play all the time, but that is almost entirely false. Worse in the few cases where somebody didn't have to work we quickly discover that it was because they had many slaves doing all the work for them. In reality your typical person today is working much less than at any previous time in history. If it seems otherwise it is because you are not counting all the work - hunter gathers may have only spend a few hours a week hunting/gathering, but they spent many many more hours once the hunting/gathering was done preparing the results of that work. Those mud huts they live in - a lot of effort to build and keep up. Those blankets they sleep on to keep warm - a lot of work to make them (and they don't last forever).