Well, let's stop consuming fish, because maritime ecosystems, stop meat because animal cruelty and global warming, stop soy because rainforests and genetic manipulation, stop rice because methane emissions, stop potatoes because neophytes in most of the world and stop lettuce because low-calorie waste of precious land.

I guess that leaves us with wheat and soylent green...

> stop soy because rainforests

that's only because it's used as animal feed. hence soy got a bad name. most rain forest destruction is for our live stocks.

> and genetic manipulation

we can just stop that by itself

> stop rice because methane emissions

nothing compared to emissions by live stock. not in the same league (per calorie).

> stop potatoes because neophytes in most of the world

never heard of that.

> stop lettuce because low-calorie waste of precious land

we need more than calories, lettuce provides many minerals we need.

> I guess that leaves us with wheat and soylent green...

not really. look for vegan/plantbased/WFPB recipes and be amazed. richt and healthy (at times) and cruelty free

Answers like yours are just cherry-picking some approaches to support your favourite solution, veganism. There are many more of those kinds of problems, stemming from a common one, overpopulation. Any linear approach reducing consumption of something glosses over the fact that world population is still in exponential growth, and factors influencing that are barely understood and at best handwaving arguments about expected slowdowns are provided. Veganism is throwing a hotdog at a herd of hungry lions here...

the world is not in exponential population growth - the rate of growth has been shrinking for two generations. global population decline will happen in my lifetime. the demographic transition happened centuries ago in some countries. fertility rates are falling faster than any of the overpopulation monster-in-the-closet analyses assume, why are you afraid of overpopulation?