In reply to Shani:
I've got relatives who live in Almeria and I've seen the poly tunnels first hand. They are not like the nice neat poly tunnels you see in Holland. Sort of the agricultural equivalent to a sprawling shanty town. However...
If all the worlds vegetables were grown there, then I'd accept your point. Except that is not the case. I'd hazard a guess that even some of the most committed carnivores have some salad of dubious provenance on their plate, on occasion.
If we're gong to select examples of bad practice, then the factory farming of meat is pretty grim. Even without examples of bad practice. That's global, not just concentrated in one small area.
>The seas of plastic and slave labour...
I saw what you did there.
https://www.theguardian.com/environment/2019/nov/06/dumped-fishing-gear-is-...
https://www.theguardian.com/world/2019/sep/21/such-brutality-tricked-into-s...
See, I didn't even mention mass killing wild animals and destroying their fishy habitat with bottom trawling. Or bycatch dumped because its over quota. Dead sea birds, dolphins, whales and other aquatic life caught up directly or indirectly. Or even microplastics and heavy metal pollution.
As I was saying, there's more than enough killing going on in the name of food. Lets not add to it, when we can use other existing, sustainable sources in more useful ways.