Yeah, I did think about how to make it in any way viable as just a mental exercise and came to a similar conclusion. If I didn't enjoy getting my own veggies and fruits I'd probably just stop. I mostly started because I love very spicy peppers and was unable to even buy them most of the time. I eventually started growing all sorts of things of course, you can't survive on superhot pepper pods for long, and if you could, you may not want to.