solidgoldbrass, I sort of partly agree and partly disagree with what you're saying!
For example, I completely agree that people must not go hungry, that obviously takes priority over any amount of poncey cheese.
But there's no need for anyone to go hungry. The world already produces enough food for everyone on this planet. The difficulty is that the food is being produced on a massive scale and never getting to people who need it.
In wealthy countries like the USA and the UK, the amount of food wastage is sickening. Mountains of produce just left to rot on the ground. Supermarket skips overflowing with perfectly edible, safe food. Restaurants chucking out perfect rump steak at the end of the evening while 2 doors down, families are struggling to put a basic meal on the table.
The system is not working, and producing more and more food isn't the answer.
The other question is what "cheap food" really means. Basic supermarket chicken for example, is lots cheaper to buy than wanky organic free range raised-on-Mozart corn fed chicken.
But but but. The cheap chicken is full of water, antibiotics and who knows what. There's less protein in it, it's more likely to have salmonella bugs on it, and you know that it lived a hideous, short life. It has no taste at all. It could have come from anywhere - using up huge amounts of fuel before it arrived on the supermarket shelf.
So it's cheap at the checkout, but there's a big price to pay elsewhere.
Good point about needing space - not necessarily to make bread, although in a bedsit you might not have an oven which would make it tricky - but obviously if you want to grow your own food in a serious way you need access to quite a lot of land, and that's just not going to happen for everyone in a densely populated country. So yes, there will always have to be commercial food production of some sort. My point is that the current model isn't working for anyone except the fat cats at the top.
I'm ranting, and not at you, sgb, don't worry! I've painted a simplistic picture here, but when you look at how our food is produced, the system is seriously sick.