Grow your own = Insanely cheap, very easy, super delicious.

Not going to be anywhere near enough food for one person unless you have more land available for yourself than people in a city or even most modern suburban developments are likely to have. Also takes a lot of time and effort if you want more than the occasional tomato, cucumber, lettuce head or zucchini to enrich your diet a bit. (Can be fun on a small scale, though.)

Farmer’s market = Cheap, convenient, super delicious and big.variety.

Nice, but takes a lot of planning, storage and home cooking to work out. You may need to start planning your life around when the farmer’s markets are and what they carry. Also, the variety is necessarily limited to what farmers in your area are growing.

Friends with chickens = Delicious high quality free eggs offloaded onto you every week.

Cool if you got those, but most people don’t.

If any person actually typed that they aren’t sane at all.

That doesn’t actually rule out anything.